Page 1 of 1
Endosome Stock Photos and Images
Early endosome antigen 1 molecule Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/early-endosome-antigen-1-molecule-image65204059.htmlRFDP28CB–Early endosome antigen 1 molecule
Biological Anatomy of Lysosome, Detailed anatomy of lysosome, lysosomal structure, suicide bags of the cell, suicidal bags of an animal cell anatomy Stock Vectorhttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/biological-anatomy-of-lysosome-detailed-anatomy-of-lysosome-lysosomal-structure-suicide-bags-of-the-cell-suicidal-bags-of-an-animal-cell-anatomy-image438686334.htmlRF2GDKTW2–Biological Anatomy of Lysosome, Detailed anatomy of lysosome, lysosomal structure, suicide bags of the cell, suicidal bags of an animal cell anatomy
Early endosome antigen 1 (EEA1), molecular model. This protein is involved in the fusion and sorting of endosomes (membrane-bound compartments used to transport molecules). Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/stock-photo-early-endosome-antigen-1-eea1-molecular-model-this-protein-is-involved-73687587.htmlRFE7TN7F–Early endosome antigen 1 (EEA1), molecular model. This protein is involved in the fusion and sorting of endosomes (membrane-bound compartments used to transport molecules).
difference between exocytosis and endocytosis. The cell transports molecules into and from the cell. Vector illustration for science and education Stock Vectorhttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/difference-between-exocytosis-and-endocytosis-the-cell-transports-molecules-into-and-from-the-cell-vector-illustration-for-science-and-education-image389672047.htmlRF2DHY2JR–difference between exocytosis and endocytosis. The cell transports molecules into and from the cell. Vector illustration for science and education
Endocytosis, illustration Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/endocytosis-illustration-image595938805.htmlRF2WHFA0N–Endocytosis, illustration
Transmission electron micrograph of SARS-CoV-2 virus particles (gold) within endosomes of a heavily infected nasal Olfactory Epithelial Cell. Image ca Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/transmission-electron-micrograph-of-sars-cov-2-virus-particles-gold-within-endosomes-of-a-heavily-infected-nasal-olfactory-epithelial-cell-image-ca-image453671480.htmlRM2HA2EGT–Transmission electron micrograph of SARS-CoV-2 virus particles (gold) within endosomes of a heavily infected nasal Olfactory Epithelial Cell. Image ca
Cholesterol processing in lysosome, illustration Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/cholesterol-processing-in-lysosome-illustration-image430102904.htmlRF2FYMTJ0–Cholesterol processing in lysosome, illustration
Paraxial mesoderm development, somites and somitomeres. Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/paraxial-mesoderm-development-somites-and-somitomeres-image455027920.htmlRF2HC88N4–Paraxial mesoderm development, somites and somitomeres.
Endocytosis, exocytosis. The cell transports proteins into the cell Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/endocytosis-exocytosis-the-cell-transports-proteins-into-the-cell-image432546727.htmlRF2G3M5NB–Endocytosis, exocytosis. The cell transports proteins into the cell
Golgi body Stock Vectorhttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/golgi-body-image546990004.htmlRF2PNWF98–Golgi body
human cell components of an eukaryotic cell, nucleus and organelles and plasma membrane Golgi, mitochondria, smooth ER, rough ER, lysosome, endosome Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/human-cell-components-of-an-eukaryotic-cell-nucleus-and-organelles-and-plasma-membrane-golgi-mitochondria-smooth-er-rough-er-lysosome-endosome-image450201954.htmlRF2H4CD56–human cell components of an eukaryotic cell, nucleus and organelles and plasma membrane Golgi, mitochondria, smooth ER, rough ER, lysosome, endosome
Archive image from page 36 of Cytological observations on Endamoeba blattae. Cytological observations on Endamoeba blattae cytologicalobser174megl Year: 1940 END AMOEBA BLA TTAE—MEGLITSCH 29 Text Fig. I. Schematized Diagram of Nucleus of Trophic E. blattae (1) Nuclear membrane; (2) peripheral zone; (3) peripheral ground-plasm; (4) endosome; (5) central region; (6) centriole; (7) central ground-plasm; (8) peripheral granule; (9) peripheral spherule. Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/archive-image-from-page-36-of-cytological-observations-on-endamoeba-blattae-cytological-observations-on-endamoeba-blattae-cytologicalobser174megl-year-1940-end-amoeba-bla-ttaemeglitsch-29-text-fig-i-schematized-diagram-of-nucleus-of-trophic-e-blattae-1-nuclear-membrane-2-peripheral-zone-3-peripheral-ground-plasm-4-endosome-5-central-region-6-centriole-7-central-ground-plasm-8-peripheral-granule-9-peripheral-spherule-image259541059.htmlRMW2737F–Archive image from page 36 of Cytological observations on Endamoeba blattae. Cytological observations on Endamoeba blattae cytologicalobser174megl Year: 1940 END AMOEBA BLA TTAE—MEGLITSCH 29 Text Fig. I. Schematized Diagram of Nucleus of Trophic E. blattae (1) Nuclear membrane; (2) peripheral zone; (3) peripheral ground-plasm; (4) endosome; (5) central region; (6) centriole; (7) central ground-plasm; (8) peripheral granule; (9) peripheral spherule.
Receptor-mediated endocytosis enables cells to ingest molecules such as protein that are necessary for normal cell functioning. Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/stock-photo-receptor-mediated-endocytosis-enables-cells-to-ingest-molecules-such-24064650.htmlRMBB46KP–Receptor-mediated endocytosis enables cells to ingest molecules such as protein that are necessary for normal cell functioning.
Endocytosis process. Cellular mechanism in which substances are brought into the cell. The material is surrounded by cell membrane to form a vesicle Stock Vectorhttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/endocytosis-process-cellular-mechanism-in-which-substances-are-brought-into-the-cell-the-material-is-surrounded-by-cell-membrane-to-form-a-vesicle-image574231031.htmlRF2TA6DF3–Endocytosis process. Cellular mechanism in which substances are brought into the cell. The material is surrounded by cell membrane to form a vesicle
. The biology of the protozoa. Protozoa; Protozoa. 98 BIOLOGY OF THE PROTOZOA further formality, the nucleus meantime assuming an indefinite division figure. More frequently, however, the chromomeres are suspended between an endosome and the nuclear membrane, as in Eimeria schubergi, or various species of Trypanosoma. In some of these, at division the chromomeres appear to form a nuclear plate, and are distributed in equal groups to the daughter nuclei (Fig. 51). In a final group of types of nuclear division figures either from massive or vesicular nuclei, the chromomeres are derived from the Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biology-of-the-protozoa-protozoa-protozoa-98-biology-of-the-protozoa-further-formality-the-nucleus-meantime-assuming-an-indefinite-division-figure-more-frequently-however-the-chromomeres-are-suspended-between-an-endosome-and-the-nuclear-membrane-as-in-eimeria-schubergi-or-various-species-of-trypanosoma-in-some-of-these-at-division-the-chromomeres-appear-to-form-a-nuclear-plate-and-are-distributed-in-equal-groups-to-the-daughter-nuclei-fig-51-in-a-final-group-of-types-of-nuclear-division-figures-either-from-massive-or-vesicular-nuclei-the-chromomeres-are-derived-from-the-image234604209.htmlRMRHK41N–. The biology of the protozoa. Protozoa; Protozoa. 98 BIOLOGY OF THE PROTOZOA further formality, the nucleus meantime assuming an indefinite division figure. More frequently, however, the chromomeres are suspended between an endosome and the nuclear membrane, as in Eimeria schubergi, or various species of Trypanosoma. In some of these, at division the chromomeres appear to form a nuclear plate, and are distributed in equal groups to the daughter nuclei (Fig. 51). In a final group of types of nuclear division figures either from massive or vesicular nuclei, the chromomeres are derived from the
. Cytological observations on Endamoeba blattae. Cells; Endamoeba blattae. END AMOEBA BLA TTAE—MEGLITSCH 29. Text Fig. I. Schematized Diagram of Nucleus of Trophic E. blattae (1) Nuclear membrane; (2) peripheral zone; (3) peripheral ground-plasm; (4) endosome; (5) central region; (6) centriole; (7) central ground-plasm; (8) peripheral granule; (9) peripheral spherule.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Meglits Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/cytological-observations-on-endamoeba-blattae-cells-endamoeba-blattae-end-amoeba-bla-ttaemeglitsch-29-text-fig-i-schematized-diagram-of-nucleus-of-trophic-e-blattae-1-nuclear-membrane-2-peripheral-zone-3-peripheral-ground-plasm-4-endosome-5-central-region-6-centriole-7-central-ground-plasm-8-peripheral-granule-9-peripheral-spherule-please-note-that-these-images-are-extracted-from-scanned-page-images-that-may-have-been-digitally-enhanced-for-readability-coloration-and-appearance-of-these-illustrations-may-not-perfectly-resemble-the-original-work-meglits-image216162308.htmlRMPFK16C–. Cytological observations on Endamoeba blattae. Cells; Endamoeba blattae. END AMOEBA BLA TTAE—MEGLITSCH 29. Text Fig. I. Schematized Diagram of Nucleus of Trophic E. blattae (1) Nuclear membrane; (2) peripheral zone; (3) peripheral ground-plasm; (4) endosome; (5) central region; (6) centriole; (7) central ground-plasm; (8) peripheral granule; (9) peripheral spherule.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Meglits
Transmission electron micrograph of SARS-CoV-2 virus particles (green) within endosomes of a heavily infected nasal Olfactory Epithelial Cell. Image c Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/transmission-electron-micrograph-of-sars-cov-2-virus-particles-green-within-endosomes-of-a-heavily-infected-nasal-olfactory-epithelial-cell-image-c-image453671486.htmlRM2HA2EH2–Transmission electron micrograph of SARS-CoV-2 virus particles (green) within endosomes of a heavily infected nasal Olfactory Epithelial Cell. Image c
Cholesterol processing in lysosome, illustration Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/cholesterol-processing-in-lysosome-illustration-image430102901.htmlRF2FYMTHW–Cholesterol processing in lysosome, illustration
Archive image from page 36 of Cytological observations on Endamoeba blattae. Cytological observations on Endamoeba blattae cytologicalobser174megl Year: 1940 Text Fig. I. Schematized Diagram of Nucleus of Trophic E. blattae (1) Nuclear membrane; (2) peripheral zone; (3) peripheral ground-plasm; (4) endosome; (5) central region; (6) centriole; (7) central ground-plasm; (8) peripheral granule; (9) peripheral spherule. Text Fig. II. Schematized Drawing of Dividing Nucleus of Trophic E. blattae (1) Nuclear membrane; (2) endosomal spherule; (3) peripheral spherule; (4) peripheral granule; (5) Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/archive-image-from-page-36-of-cytological-observations-on-endamoeba-blattae-cytological-observations-on-endamoeba-blattae-cytologicalobser174megl-year-1940-text-fig-i-schematized-diagram-of-nucleus-of-trophic-e-blattae-1-nuclear-membrane-2-peripheral-zone-3-peripheral-ground-plasm-4-endosome-5-central-region-6-centriole-7-central-ground-plasm-8-peripheral-granule-9-peripheral-spherule-text-fig-ii-schematized-drawing-of-dividing-nucleus-of-trophic-e-blattae-1-nuclear-membrane-2-endosomal-spherule-3-peripheral-spherule-4-peripheral-granule-5-image259541053.htmlRMW27379–Archive image from page 36 of Cytological observations on Endamoeba blattae. Cytological observations on Endamoeba blattae cytologicalobser174megl Year: 1940 Text Fig. I. Schematized Diagram of Nucleus of Trophic E. blattae (1) Nuclear membrane; (2) peripheral zone; (3) peripheral ground-plasm; (4) endosome; (5) central region; (6) centriole; (7) central ground-plasm; (8) peripheral granule; (9) peripheral spherule. Text Fig. II. Schematized Drawing of Dividing Nucleus of Trophic E. blattae (1) Nuclear membrane; (2) endosomal spherule; (3) peripheral spherule; (4) peripheral granule; (5)
Synthesis of lipoprotein complexes in the small intestine, liver, and bloodstream, as well as delivery to peripheral tissues. Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/stock-photo-synthesis-of-lipoprotein-complexes-in-the-small-intestine-liver-and-24899271.htmlRMBCE77K–Synthesis of lipoprotein complexes in the small intestine, liver, and bloodstream, as well as delivery to peripheral tissues.
. The biology of the Protozoa. Protozoa; Protozoa. MORPHOLOGY AND TAXONOMY OF MASTIGOPHORA 255 or girdle around the cell, giving the impression of an annular row of cilia which led to the earlier name Cilioflagellata for the group (Fig. 70, p. 13()). ^Multiple flagella are characteristic of the Poly- mastigida and H'permastigida. Nuclei for the most part are simple vesicular and endosome-bear- ing nuclei, but there are wide variations in complexity so that a general description is quite inadequate (see p. 56). Chromatophores and Stigmata.—Chromatophores are the most characteristic of the plas Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biology-of-the-protozoa-protozoa-protozoa-morphology-and-taxonomy-of-mastigophora-255-or-girdle-around-the-cell-giving-the-impression-of-an-annular-row-of-cilia-which-led-to-the-earlier-name-cilioflagellata-for-the-group-fig-70-p-13-multiple-flagella-are-characteristic-of-the-poly-mastigida-and-hpermastigida-nuclei-for-the-most-part-are-simple-vesicular-and-endosome-bear-ing-nuclei-but-there-are-wide-variations-in-complexity-so-that-a-general-description-is-quite-inadequate-see-p-56-chromatophores-and-stigmatachromatophores-are-the-most-characteristic-of-the-plas-image234602978.htmlRMRHK2DP–. The biology of the Protozoa. Protozoa; Protozoa. MORPHOLOGY AND TAXONOMY OF MASTIGOPHORA 255 or girdle around the cell, giving the impression of an annular row of cilia which led to the earlier name Cilioflagellata for the group (Fig. 70, p. 13()). ^Multiple flagella are characteristic of the Poly- mastigida and H'permastigida. Nuclei for the most part are simple vesicular and endosome-bear- ing nuclei, but there are wide variations in complexity so that a general description is quite inadequate (see p. 56). Chromatophores and Stigmata.—Chromatophores are the most characteristic of the plas
. Cytological observations on Endamoeba blattae. Cells; Endamoeba blattae. Text Fig. I. Schematized Diagram of Nucleus of Trophic E. blattae (1) Nuclear membrane; (2) peripheral zone; (3) peripheral ground-plasm; (4) endosome; (5) central region; (6) centriole; (7) central ground-plasm; (8) peripheral granule; (9) peripheral spherule.. Text Fig. II. Schematized Drawing of Dividing Nucleus of Trophic E. blattae (1) Nuclear membrane; (2) endosomal spherule; (3) peripheral spherule; (4) peripheral granule; (5) chromosome. Central region.—The region lying within the endosomal girdle in the interph Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/cytological-observations-on-endamoeba-blattae-cells-endamoeba-blattae-text-fig-i-schematized-diagram-of-nucleus-of-trophic-e-blattae-1-nuclear-membrane-2-peripheral-zone-3-peripheral-ground-plasm-4-endosome-5-central-region-6-centriole-7-central-ground-plasm-8-peripheral-granule-9-peripheral-spherule-text-fig-ii-schematized-drawing-of-dividing-nucleus-of-trophic-e-blattae-1-nuclear-membrane-2-endosomal-spherule-3-peripheral-spherule-4-peripheral-granule-5-chromosome-central-regionthe-region-lying-within-the-endosomal-girdle-in-the-interph-image216162302.htmlRMPFK166–. Cytological observations on Endamoeba blattae. Cells; Endamoeba blattae. Text Fig. I. Schematized Diagram of Nucleus of Trophic E. blattae (1) Nuclear membrane; (2) peripheral zone; (3) peripheral ground-plasm; (4) endosome; (5) central region; (6) centriole; (7) central ground-plasm; (8) peripheral granule; (9) peripheral spherule.. Text Fig. II. Schematized Drawing of Dividing Nucleus of Trophic E. blattae (1) Nuclear membrane; (2) endosomal spherule; (3) peripheral spherule; (4) peripheral granule; (5) chromosome. Central region.—The region lying within the endosomal girdle in the interph
Transmission electron micrograph of SARS-CoV-2 virus particles (green) within endosomes of a heavily infected nasal Olfactory Epithelial Cell. Image c Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/transmission-electron-micrograph-of-sars-cov-2-virus-particles-green-within-endosomes-of-a-heavily-infected-nasal-olfactory-epithelial-cell-image-c-image453671484.htmlRM2HA2EH0–Transmission electron micrograph of SARS-CoV-2 virus particles (green) within endosomes of a heavily infected nasal Olfactory Epithelial Cell. Image c
. The biology of the protozoa. Protozoa; Protozoa. D. Fig. 61.—Relation of parabasal to nucleus. A, Crithidia euryophthalmi endosome of nucleus and parabasal connected by rhizoplast; B, origin of parabasal from endo- some of nucleus; C and D, differentiation of parabasal and rhizoplasts; E, Trypano- soma cruzi, and F, Crithidia leptocoridis, for comparison. (After MeCulloch.) It is in connection with the parabasal body that most of the difficulties have arisen concerning the interpretation of cytoplasmic kinetic elements. It is still in the stage of polemics and contro- versies continue over t Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biology-of-the-protozoa-protozoa-protozoa-d-fig-61relation-of-parabasal-to-nucleus-a-crithidia-euryophthalmi-endosome-of-nucleus-and-parabasal-connected-by-rhizoplast-b-origin-of-parabasal-from-endo-some-of-nucleus-c-and-d-differentiation-of-parabasal-and-rhizoplasts-e-trypano-soma-cruzi-and-f-crithidia-leptocoridis-for-comparison-after-meculloch-it-is-in-connection-with-the-parabasal-body-that-most-of-the-difficulties-have-arisen-concerning-the-interpretation-of-cytoplasmic-kinetic-elements-it-is-still-in-the-stage-of-polemics-and-contro-versies-continue-over-t-image234603963.htmlRMRHK3MY–. The biology of the protozoa. Protozoa; Protozoa. D. Fig. 61.—Relation of parabasal to nucleus. A, Crithidia euryophthalmi endosome of nucleus and parabasal connected by rhizoplast; B, origin of parabasal from endo- some of nucleus; C and D, differentiation of parabasal and rhizoplasts; E, Trypano- soma cruzi, and F, Crithidia leptocoridis, for comparison. (After MeCulloch.) It is in connection with the parabasal body that most of the difficulties have arisen concerning the interpretation of cytoplasmic kinetic elements. It is still in the stage of polemics and contro- versies continue over t
Transmission electron micrograph of SARS-CoV-2 virus particles (teal) within endosomes of a heavily infected nasal Olfactory Epithelial Cell. Image ca Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/transmission-electron-micrograph-of-sars-cov-2-virus-particles-teal-within-endosomes-of-a-heavily-infected-nasal-olfactory-epithelial-cell-image-ca-image453671485.htmlRM2HA2EH1–Transmission electron micrograph of SARS-CoV-2 virus particles (teal) within endosomes of a heavily infected nasal Olfactory Epithelial Cell. Image ca
. The biology of the Protozoa. Protozoa; Protozoa. 60 BIOLOGY OF THE PROTOZOA structures. After treatment with beef broth the body of Dileptus is enormously distended due to the swelhng of these cytoendosomes (Fig. 24). The centrally placed intranuclear body is generally described under the name karyosome, a term which has been so widely used by students of the Protozoa and for so many obviously different structures that it is practically synonymous with endosome or Binnenkorper. Thus Minchin describes it as a combination of chro- matin and plastin; Doflein defines a karyosome as a centrally p Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biology-of-the-protozoa-protozoa-protozoa-60-biology-of-the-protozoa-structures-after-treatment-with-beef-broth-the-body-of-dileptus-is-enormously-distended-due-to-the-swelhng-of-these-cytoendosomes-fig-24-the-centrally-placed-intranuclear-body-is-generally-described-under-the-name-karyosome-a-term-which-has-been-so-widely-used-by-students-of-the-protozoa-and-for-so-many-obviously-different-structures-that-it-is-practically-synonymous-with-endosome-or-binnenkorper-thus-minchin-describes-it-as-a-combination-of-chro-matin-and-plastin-doflein-defines-a-karyosome-as-a-centrally-p-image234604763.htmlRMRHK4NF–. The biology of the Protozoa. Protozoa; Protozoa. 60 BIOLOGY OF THE PROTOZOA structures. After treatment with beef broth the body of Dileptus is enormously distended due to the swelhng of these cytoendosomes (Fig. 24). The centrally placed intranuclear body is generally described under the name karyosome, a term which has been so widely used by students of the Protozoa and for so many obviously different structures that it is practically synonymous with endosome or Binnenkorper. Thus Minchin describes it as a combination of chro- matin and plastin; Doflein defines a karyosome as a centrally p
Transmission electron micrograph of SARS-CoV-2 virus particles (yellow) within endosomes of a heavily infected nasal Olfactory Epithelial Cell. Image Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/transmission-electron-micrograph-of-sars-cov-2-virus-particles-yellow-within-endosomes-of-a-heavily-infected-nasal-olfactory-epithelial-cell-image-image453671466.htmlRM2HA2EGA–Transmission electron micrograph of SARS-CoV-2 virus particles (yellow) within endosomes of a heavily infected nasal Olfactory Epithelial Cell. Image
. The biology of the Protozoa. Protozoa; Protozoa. 80 BIOLOGY OF THE PROTOZOA endobasal body, there are other types {e. g., Myxoholus jjfeifferi, one of the Myxosporidia) in which the centriole emerges from an enveloping phistin-hke matrix, which, hke a nucleolus, then degen- erates and disappears. An interesting variation of this type of endobasal bodies is illus- trated by Amosba xespertiliu as described by Doflein. Here the endosome is composed of chromatin, plastin and kinetic elements and all parts of the spindle are made up solely from these endosomal substances, while the outer nucleus Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biology-of-the-protozoa-protozoa-protozoa-80-biology-of-the-protozoa-endobasal-body-there-are-other-types-e-g-myxoholus-jjfeifferi-one-of-the-myxosporidia-in-which-the-centriole-emerges-from-an-enveloping-phistin-hke-matrix-which-hke-a-nucleolus-then-degen-erates-and-disappears-an-interesting-variation-of-this-type-of-endobasal-bodies-is-illus-trated-by-amosba-xespertiliu-as-described-by-doflein-here-the-endosome-is-composed-of-chromatin-plastin-and-kinetic-elements-and-all-parts-of-the-spindle-are-made-up-solely-from-these-endosomal-substances-while-the-outer-nucleus-image234604539.htmlRMRHK4DF–. The biology of the Protozoa. Protozoa; Protozoa. 80 BIOLOGY OF THE PROTOZOA endobasal body, there are other types {e. g., Myxoholus jjfeifferi, one of the Myxosporidia) in which the centriole emerges from an enveloping phistin-hke matrix, which, hke a nucleolus, then degen- erates and disappears. An interesting variation of this type of endobasal bodies is illus- trated by Amosba xespertiliu as described by Doflein. Here the endosome is composed of chromatin, plastin and kinetic elements and all parts of the spindle are made up solely from these endosomal substances, while the outer nucleus
Transmission electron micrograph of SARS-CoV-2 virus particles (gold) within endosomes of a heavily infected nasal Olfactory Epithelial Cell. Image ca Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/transmission-electron-micrograph-of-sars-cov-2-virus-particles-gold-within-endosomes-of-a-heavily-infected-nasal-olfactory-epithelial-cell-image-ca-image453671475.htmlRM2HA2EGK–Transmission electron micrograph of SARS-CoV-2 virus particles (gold) within endosomes of a heavily infected nasal Olfactory Epithelial Cell. Image ca
. The biology of the Protozoa. Protozoa; Protozoa. NUCLEI AND KINETIC ELEMENTS 119 presumably cliAides to form the daughter plates as shown in Schaudinn's well-known figure, or to division figures like that of Centropyxis aculeata. Another widely distributed type of division figure is derived from vesicular nuclei in which the chromatin is not contained in one or more endosomes but is distributed peripherall' about the nucleus where it usually forms a distinct chromatin reticulum. Such nuclei usually contain an endosome which may be the most conspicuous structure of the nucleus. In Amoeba cry Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biology-of-the-protozoa-protozoa-protozoa-nuclei-and-kinetic-elements-119-presumably-cliaides-to-form-the-daughter-plates-as-shown-in-schaudinns-well-known-figure-or-to-division-figures-like-that-of-centropyxis-aculeata-another-widely-distributed-type-of-division-figure-is-derived-from-vesicular-nuclei-in-which-the-chromatin-is-not-contained-in-one-or-more-endosomes-but-is-distributed-peripherall-about-the-nucleus-where-it-usually-forms-a-distinct-chromatin-reticulum-such-nuclei-usually-contain-an-endosome-which-may-be-the-most-conspicuous-structure-of-the-nucleus-in-amoeba-cry-image234603933.htmlRMRHK3KW–. The biology of the Protozoa. Protozoa; Protozoa. NUCLEI AND KINETIC ELEMENTS 119 presumably cliAides to form the daughter plates as shown in Schaudinn's well-known figure, or to division figures like that of Centropyxis aculeata. Another widely distributed type of division figure is derived from vesicular nuclei in which the chromatin is not contained in one or more endosomes but is distributed peripherall' about the nucleus where it usually forms a distinct chromatin reticulum. Such nuclei usually contain an endosome which may be the most conspicuous structure of the nucleus. In Amoeba cry
![. The biology of the Protozoa. Protozoa; Protozoa. 118 BIOLOGY OF THE PROTOZOA In another group of types the chromatin of the resting vesicular nucleus is contained also in a definite endosome, but, in preparation for division, the endosome fragments into minute chromomeres, which may be strung out in lines through the nucleus, these strings being di'idefl transversely at division. Or the chromomeres may be aggregated in a fairly homogeneous transverse plate in the center of the dividing nucleus. The former condition is illustrated 7/ V^ a"*/.. B. Please note that these images are extrac Stock Photo](https://c8.alamy.com/comp/RHK3N6/the-biology-of-the-protozoa-protozoa-protozoa-118-biology-of-the-protozoa-in-another-group-of-types-the-chromatin-of-the-resting-vesicular-nucleus-is-contained-also-in-a-definite-endosome-but-in-preparation-for-division-the-endosome-fragments-into-minute-chromomeres-which-may-be-strung-out-in-lines-through-the-nucleus-these-strings-being-diidefl-transversely-at-division-or-the-chromomeres-may-be-aggregated-in-a-fairly-homogeneous-transverse-plate-in-the-center-of-the-dividing-nucleus-the-former-condition-is-illustrated-7-v-aquot-b-please-note-that-these-images-are-extrac-RHK3N6.jpg ". The biology of the Protozoa. Protozoa; Protozoa. 118 BIOLOGY OF THE PROTOZOA In another group of types the chromatin of the resting vesicular nucleus is contained also in a definite endosome, but, in preparation for division, the endosome fragments into minute chromomeres, which may be strung out in lines through the nucleus, these strings being di'idefl transversely at division. Or the chromomeres may be aggregated in a fairly homogeneous transverse plate in the center of the dividing nucleus. The former condition is illustrated 7/ V^ a"*/.. B. Please note that these images are extrac Stock Photo")
. The biology of the Protozoa. Protozoa; Protozoa. 118 BIOLOGY OF THE PROTOZOA In another group of types the chromatin of the resting vesicular nucleus is contained also in a definite endosome, but, in preparation for division, the endosome fragments into minute chromomeres, which may be strung out in lines through the nucleus, these strings being di'idefl transversely at division. Or the chromomeres may be aggregated in a fairly homogeneous transverse plate in the center of the dividing nucleus. The former condition is illustrated 7/ V^ a"*/.. B. Please note that these images are extrac Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biology-of-the-protozoa-protozoa-protozoa-118-biology-of-the-protozoa-in-another-group-of-types-the-chromatin-of-the-resting-vesicular-nucleus-is-contained-also-in-a-definite-endosome-but-in-preparation-for-division-the-endosome-fragments-into-minute-chromomeres-which-may-be-strung-out-in-lines-through-the-nucleus-these-strings-being-diidefl-transversely-at-division-or-the-chromomeres-may-be-aggregated-in-a-fairly-homogeneous-transverse-plate-in-the-center-of-the-dividing-nucleus-the-former-condition-is-illustrated-7-v-aquot-b-please-note-that-these-images-are-extrac-image234603970.htmlRMRHK3N6–. The biology of the Protozoa. Protozoa; Protozoa. 118 BIOLOGY OF THE PROTOZOA In another group of types the chromatin of the resting vesicular nucleus is contained also in a definite endosome, but, in preparation for division, the endosome fragments into minute chromomeres, which may be strung out in lines through the nucleus, these strings being di'idefl transversely at division. Or the chromomeres may be aggregated in a fairly homogeneous transverse plate in the center of the dividing nucleus. The former condition is illustrated 7/ V^ a"*/.. B. Please note that these images are extrac
. The biology of the protozoa. Protozoa; Protozoa. THE FUNDAMENTAL ORGANIZATION 06 expression Binnenkorper, or its equivalent term endosome, the latter as yet, at least, having no specific significance, while for the endosomes having functions characteristic of the kinetic complex a specific term may well be applied. In the present work 1 shall employ the term endosome in a general way to indicate all central intranuclear structures including those of kinetic function, while for those which are known to be of the nature of kinetic elements I shall use the term endobasal body.. Fig. 26.—Divisio Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biology-of-the-protozoa-protozoa-protozoa-the-fundamental-organization-06-expression-binnenkorper-or-its-equivalent-term-endosome-the-latter-as-yet-at-least-having-no-specific-significance-while-for-the-endosomes-having-functions-characteristic-of-the-kinetic-complex-a-specific-term-may-well-be-applied-in-the-present-work-1-shall-employ-the-term-endosome-in-a-general-way-to-indicate-all-central-intranuclear-structures-including-those-of-kinetic-function-while-for-those-which-are-known-to-be-of-the-nature-of-kinetic-elements-i-shall-use-the-term-endobasal-body-fig-26divisio-image234604612.htmlRMRHK4G4–. The biology of the protozoa. Protozoa; Protozoa. THE FUNDAMENTAL ORGANIZATION 06 expression Binnenkorper, or its equivalent term endosome, the latter as yet, at least, having no specific significance, while for the endosomes having functions characteristic of the kinetic complex a specific term may well be applied. In the present work 1 shall employ the term endosome in a general way to indicate all central intranuclear structures including those of kinetic function, while for those which are known to be of the nature of kinetic elements I shall use the term endobasal body.. Fig. 26.—Divisio
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. FIG. 5. Pentagonal cyst, from above. The thick yellow wall has 5 pores. The black spheres have disappeared, the cytoplasm has become homogeneous and the nucleus, devoid of an endosome, has its chromatin peripherally located. FIG. 7. Living Astasia. The shape is typical and gullet, reservoir, contractile vacuole, and nuclear vesicle are faintly shown as well as paramylum granules, cytoplasmic granules, and the striations of the pellicle. FIG. 11. Prophase, the new flagella well developed. The elongate endosome is surrounded b Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biological-bulletin-biology-zoology-biology-marine-biology-fig-5-pentagonal-cyst-from-above-the-thick-yellow-wall-has-5-pores-the-black-spheres-have-disappeared-the-cytoplasm-has-become-homogeneous-and-the-nucleus-devoid-of-an-endosome-has-its-chromatin-peripherally-located-fig-7-living-astasia-the-shape-is-typical-and-gullet-reservoir-contractile-vacuole-and-nuclear-vesicle-are-faintly-shown-as-well-as-paramylum-granules-cytoplasmic-granules-and-the-striations-of-the-pellicle-fig-11-prophase-the-new-flagella-well-developed-the-elongate-endosome-is-surrounded-b-image234671793.htmlRMRHP67D–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. FIG. 5. Pentagonal cyst, from above. The thick yellow wall has 5 pores. The black spheres have disappeared, the cytoplasm has become homogeneous and the nucleus, devoid of an endosome, has its chromatin peripherally located. FIG. 7. Living Astasia. The shape is typical and gullet, reservoir, contractile vacuole, and nuclear vesicle are faintly shown as well as paramylum granules, cytoplasmic granules, and the striations of the pellicle. FIG. 11. Prophase, the new flagella well developed. The elongate endosome is surrounded b
. The biology of the Protozoa. Protozoa; Protozoa. NUCLEI AND KINETIC ELEMENTS 89 A modification of this mode of origin of the cytoplasmic kinetic element is shown by Parapolytoma saiurna according to Jameson (1914) and by Oxyrrhis marina (Hall, 1925). In these cases the old flagella and their basal bodies are said to degenerate and dis- appear prior to, or during, nuclear division. An intranuclear endo- basal body which is concealed within an endosome during vegetative. Fig. 44.—Oxyrrhis 7})arina; details of nucleus, centriole, and paradesmose. (After Hall.) life, first divides, its daughter Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biology-of-the-protozoa-protozoa-protozoa-nuclei-and-kinetic-elements-89-a-modification-of-this-mode-of-origin-of-the-cytoplasmic-kinetic-element-is-shown-by-parapolytoma-saiurna-according-to-jameson-1914-and-by-oxyrrhis-marina-hall-1925-in-these-cases-the-old-flagella-and-their-basal-bodies-are-said-to-degenerate-and-dis-appear-prior-to-or-during-nuclear-division-an-intranuclear-endo-basal-body-which-is-concealed-within-an-endosome-during-vegetative-fig-44oxyrrhis-7arina-details-of-nucleus-centriole-and-paradesmose-after-hall-life-first-divides-its-daughter-image234604260.htmlRMRHK43G–. The biology of the Protozoa. Protozoa; Protozoa. NUCLEI AND KINETIC ELEMENTS 89 A modification of this mode of origin of the cytoplasmic kinetic element is shown by Parapolytoma saiurna according to Jameson (1914) and by Oxyrrhis marina (Hall, 1925). In these cases the old flagella and their basal bodies are said to degenerate and dis- appear prior to, or during, nuclear division. An intranuclear endo- basal body which is concealed within an endosome during vegetative. Fig. 44.—Oxyrrhis 7})arina; details of nucleus, centriole, and paradesmose. (After Hall.) life, first divides, its daughter
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 202 PAUL E. FELL Gametogenesis and embryonic development in Haliclona loosanoffi are virtually identical to these processes in Haliclona ecbasis which has been studied in detail (Fell, 1969, 1970). The sperm develop within spermatic cysts which are scattered throughout the endosome. Each cyst is made up of one or more clusters of spermatogenic cells surrounded by a layer of pinacocytes. All of the cells of a cluster are at the same stage of development, but different clusters within the same cyst may be at different stages. Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biological-bulletin-biology-zoology-biology-marine-biology-202-paul-e-fell-gametogenesis-and-embryonic-development-in-haliclona-loosanoffi-are-virtually-identical-to-these-processes-in-haliclona-ecbasis-which-has-been-studied-in-detail-fell-1969-1970-the-sperm-develop-within-spermatic-cysts-which-are-scattered-throughout-the-endosome-each-cyst-is-made-up-of-one-or-more-clusters-of-spermatogenic-cells-surrounded-by-a-layer-of-pinacocytes-all-of-the-cells-of-a-cluster-are-at-the-same-stage-of-development-but-different-clusters-within-the-same-cyst-may-be-at-different-stages-image234650406.htmlRMRHN6YJ–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 202 PAUL E. FELL Gametogenesis and embryonic development in Haliclona loosanoffi are virtually identical to these processes in Haliclona ecbasis which has been studied in detail (Fell, 1969, 1970). The sperm develop within spermatic cysts which are scattered throughout the endosome. Each cyst is made up of one or more clusters of spermatogenic cells surrounded by a layer of pinacocytes. All of the cells of a cluster are at the same stage of development, but different clusters within the same cyst may be at different stages.
. The biology of the protozoa. Protozoa; Protozoa. 96 BIOLOGY OF THE PROTOZOA for division, the endosome fragments into minute chromomeres, which may be strung out in lines through the nucleus, these strings being divided transversely at division. Or the chromomeres may be aggregated in a fairly homogeneous transverse plate in the center of the dividing nucleus (Fig. 51). The former condition is illustrated by the nucleus during vegetative division of Actinosphaerium eich- hornii according to Hertwig, the latter condition by Sphaerastnnu and Acanthocystis (Fig. 50), Collodictyum (Fig. 51), Par Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biology-of-the-protozoa-protozoa-protozoa-96-biology-of-the-protozoa-for-division-the-endosome-fragments-into-minute-chromomeres-which-may-be-strung-out-in-lines-through-the-nucleus-these-strings-being-divided-transversely-at-division-or-the-chromomeres-may-be-aggregated-in-a-fairly-homogeneous-transverse-plate-in-the-center-of-the-dividing-nucleus-fig-51-the-former-condition-is-illustrated-by-the-nucleus-during-vegetative-division-of-actinosphaerium-eich-hornii-according-to-hertwig-the-latter-condition-by-sphaerastnnu-and-acanthocystis-fig-50-collodictyum-fig-51-par-image234538855.htmlRMRHG4KK–. The biology of the protozoa. Protozoa; Protozoa. 96 BIOLOGY OF THE PROTOZOA for division, the endosome fragments into minute chromomeres, which may be strung out in lines through the nucleus, these strings being divided transversely at division. Or the chromomeres may be aggregated in a fairly homogeneous transverse plate in the center of the dividing nucleus (Fig. 51). The former condition is illustrated by the nucleus during vegetative division of Actinosphaerium eich- hornii according to Hertwig, the latter condition by Sphaerastnnu and Acanthocystis (Fig. 50), Collodictyum (Fig. 51), Par
. The biology of the protozoa. Protozoa; Protozoa. Fig. 59.—Flagellum insertion. A, Codosiga botrytis, with flagellum arising from the nucleus. B, Dimastigamoeba bistadialis Pusch. with blepharoplast connected by rhizoplasts with the nucleus, and with independent basal bodies. C, Dimastigamoeba gruberi and origin of the blepharoplast from the endosome in the nucleus; (b) bleph- aroplast; (w) nucleus; (r) rhizoplast. {A and B from Doflein, C from Wilson.) (108). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloratio Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biology-of-the-protozoa-protozoa-protozoa-fig-59flagellum-insertion-a-codosiga-botrytis-with-flagellum-arising-from-the-nucleus-b-dimastigamoeba-bistadialis-pusch-with-blepharoplast-connected-by-rhizoplasts-with-the-nucleus-and-with-independent-basal-bodies-c-dimastigamoeba-gruberi-and-origin-of-the-blepharoplast-from-the-endosome-in-the-nucleus-b-bleph-aroplast-w-nucleus-r-rhizoplast-a-and-b-from-doflein-c-from-wilson-108-please-note-that-these-images-are-extracted-from-scanned-page-images-that-may-have-been-digitally-enhanced-for-readability-coloratio-image234604044.htmlRMRHK3RT–. The biology of the protozoa. Protozoa; Protozoa. Fig. 59.—Flagellum insertion. A, Codosiga botrytis, with flagellum arising from the nucleus. B, Dimastigamoeba bistadialis Pusch. with blepharoplast connected by rhizoplasts with the nucleus, and with independent basal bodies. C, Dimastigamoeba gruberi and origin of the blepharoplast from the endosome in the nucleus; (b) bleph- aroplast; (w) nucleus; (r) rhizoplast. {A and B from Doflein, C from Wilson.) (108). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloratio
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. • Flagellurn •External opening of Reservoir •Reservoir •Axial Filaments •Contractile Vacuole Blepharoplasts - . .. —. -Rhizoplast •Nucleus •Nuclear Membrane •Intranuclear Body Endosome -V Paramvlon Bodv • Cuticular Striation Chromatophores. H. L. RATCLIFFE.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Marine Biological Laboratory (Woods Hole, Mass. ); Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biological-bulletin-biology-zoology-biology-marine-biology-flagellurn-external-opening-of-reservoir-reservoir-axial-filaments-contractile-vacuole-blepharoplasts-rhizoplast-nucleus-nuclear-membrane-intranuclear-body-endosome-v-paramvlon-bodv-cuticular-striation-chromatophores-h-l-ratcliffe-please-note-that-these-images-are-extracted-from-scanned-page-images-that-may-have-been-digitally-enhanced-for-readability-coloration-and-appearance-of-these-illustrations-may-not-perfectly-resemble-the-original-work-marine-biological-laboratory-woods-hole-mass-image234672876.htmlRMRHP7J4–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. • Flagellurn •External opening of Reservoir •Reservoir •Axial Filaments •Contractile Vacuole Blepharoplasts - . .. —. -Rhizoplast •Nucleus •Nuclear Membrane •Intranuclear Body Endosome -V Paramvlon Bodv • Cuticular Striation Chromatophores. H. L. RATCLIFFE.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Marine Biological Laboratory (Woods Hole, Mass. );
. The biology of the Protozoa. Protozoa; Protozoa. 62 BIOLOGY OF THE PROTOZOA latter as yet, at least, having no specific significance, while for the endosomes having functions characteristic of the kinetic complex a specific term may well be applied. In the present work I shall employ the term endosome in a general way to indicate all central intranuclear structures including those of kinetic function, while for those which are known to be of the nature of kinetic elements I shall use the term endohasal body. The endosome-bearing vesicular nuclei present manifold variations in the arrangement Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biology-of-the-protozoa-protozoa-protozoa-62-biology-of-the-protozoa-latter-as-yet-at-least-having-no-specific-significance-while-for-the-endosomes-having-functions-characteristic-of-the-kinetic-complex-a-specific-term-may-well-be-applied-in-the-present-work-i-shall-employ-the-term-endosome-in-a-general-way-to-indicate-all-central-intranuclear-structures-including-those-of-kinetic-function-while-for-those-which-are-known-to-be-of-the-nature-of-kinetic-elements-i-shall-use-the-term-endohasal-body-the-endosome-bearing-vesicular-nuclei-present-manifold-variations-in-the-arrangement-image234604738.htmlRMRHK4MJ–. The biology of the Protozoa. Protozoa; Protozoa. 62 BIOLOGY OF THE PROTOZOA latter as yet, at least, having no specific significance, while for the endosomes having functions characteristic of the kinetic complex a specific term may well be applied. In the present work I shall employ the term endosome in a general way to indicate all central intranuclear structures including those of kinetic function, while for those which are known to be of the nature of kinetic elements I shall use the term endohasal body. The endosome-bearing vesicular nuclei present manifold variations in the arrangement
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. lt. • Flagellurn •External opening of Reservoir •Reservoir •Axial Filaments •Contractile Vacuole Blepharoplasts - . .. —. -Rhizoplast •Nucleus •Nuclear Membrane •Intranuclear Body Endosome -V Paramvlon Bodv • Cuticular Striation Chromatophores. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biolo Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biological-bulletin-biology-zoology-biology-marine-biology-lt-flagellurn-external-opening-of-reservoir-reservoir-axial-filaments-contractile-vacuole-blepharoplasts-rhizoplast-nucleus-nuclear-membrane-intranuclear-body-endosome-v-paramvlon-bodv-cuticular-striation-chromatophores-please-note-that-these-images-are-extracted-from-scanned-page-images-that-may-have-been-digitally-enhanced-for-readability-coloration-and-appearance-of-these-illustrations-may-not-perfectly-resemble-the-original-work-marine-biological-laboratory-woods-hole-mass-marine-biolo-image234672892.htmlRMRHP7JM–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. lt. • Flagellurn •External opening of Reservoir •Reservoir •Axial Filaments •Contractile Vacuole Blepharoplasts - . .. —. -Rhizoplast •Nucleus •Nuclear Membrane •Intranuclear Body Endosome -V Paramvlon Bodv • Cuticular Striation Chromatophores. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biolo
. The biology of the protozoa. Protozoa; Protozoa. Fig. 30. — Chilodon sp. Macronucleus with endosome and endobasal body (end). (mo) Mouth surrounded by pharyngeal basket. (Original.) B. Fig. 31.—Endamoeba dysenteriae (Councilman and Lafleur). Two stages in the metamorphosis of endosome and endobasal body. (After Hartmann.) probable that in all of these cases the endobasal body is em- bedded in a core of plastin.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biology-of-the-protozoa-protozoa-protozoa-fig-30-chilodon-sp-macronucleus-with-endosome-and-endobasal-body-end-mo-mouth-surrounded-by-pharyngeal-basket-original-b-fig-31endamoeba-dysenteriae-councilman-and-lafleur-two-stages-in-the-metamorphosis-of-endosome-and-endobasal-body-after-hartmann-probable-that-in-all-of-these-cases-the-endobasal-body-is-em-bedded-in-a-core-of-plastin-please-note-that-these-images-are-extracted-from-scanned-page-images-that-may-have-been-digitally-enhanced-for-readability-coloration-and-appearance-of-these-illustrations-may-not-image234604528.htmlRMRHK4D4–. The biology of the protozoa. Protozoa; Protozoa. Fig. 30. — Chilodon sp. Macronucleus with endosome and endobasal body (end). (mo) Mouth surrounded by pharyngeal basket. (Original.) B. Fig. 31.—Endamoeba dysenteriae (Councilman and Lafleur). Two stages in the metamorphosis of endosome and endobasal body. (After Hartmann.) probable that in all of these cases the endobasal body is em- bedded in a core of plastin.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not
. The biology of the Protozoa. Protozoa; Protozoa. n. m Fig. 48.—Relation of parabasal to nucleus. A, CrUhidia curyophthalmi endosome of nucleus and parabasal connected by rhizoplast; B, origin of parabasal from endo- some of nucleu.s; C and /), differentiation of parabasal and rhizoplasts; E, Trypano- soma cruzi, and F, Crithidia leptocoridis for comparison. (After McCulloch.) multiple and in which axial threads (rhizoplasts) unite to form a central axial supporting rod; (7) Trichonympha ccnnpanida in which the blepharoplast (centroblepharoplast) acts as a centrosome in mitosis while long rhi Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biology-of-the-protozoa-protozoa-protozoa-n-m-fig-48relation-of-parabasal-to-nucleus-a-cruhidia-curyophthalmi-endosome-of-nucleus-and-parabasal-connected-by-rhizoplast-b-origin-of-parabasal-from-endo-some-of-nucleus-c-and-differentiation-of-parabasal-and-rhizoplasts-e-trypano-soma-cruzi-and-f-crithidia-leptocoridis-for-comparison-after-mcculloch-multiple-and-in-which-axial-threads-rhizoplasts-unite-to-form-a-central-axial-supporting-rod-7-trichonympha-ccnnpanida-in-which-the-blepharoplast-centroblepharoplast-acts-as-a-centrosome-in-mitosis-while-long-rhi-image234604205.htmlRMRHK41H–. The biology of the Protozoa. Protozoa; Protozoa. n. m Fig. 48.—Relation of parabasal to nucleus. A, CrUhidia curyophthalmi endosome of nucleus and parabasal connected by rhizoplast; B, origin of parabasal from endo- some of nucleu.s; C and /), differentiation of parabasal and rhizoplasts; E, Trypano- soma cruzi, and F, Crithidia leptocoridis for comparison. (After McCulloch.) multiple and in which axial threads (rhizoplasts) unite to form a central axial supporting rod; (7) Trichonympha ccnnpanida in which the blepharoplast (centroblepharoplast) acts as a centrosome in mitosis while long rhi
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. FIG. B. Camera-lucida drawings of nuclei to show variations in form of the endosome: 1-8, Pcranema trichophorum; g, 10, Heieroncma acus; X 1045- mediately surrounding the endosome. Between the endosome and the nuclear membrane lie numerous chromatin granules, or chromomeres, apparently embedded in some sort of an achromatic network (Schaudinn and hematoxylin preparations). Belaf (1916) states that the endosome of Peranema is always alveolar in struc- ture, even in the interphase. Such an appearance seems to be de- pendent up Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biological-bulletin-biology-zoology-biology-marine-biology-fig-b-camera-lucida-drawings-of-nuclei-to-show-variations-in-form-of-the-endosome-1-8-pcranema-trichophorum-g-10-heieroncma-acus-x-1045-mediately-surrounding-the-endosome-between-the-endosome-and-the-nuclear-membrane-lie-numerous-chromatin-granules-or-chromomeres-apparently-embedded-in-some-sort-of-an-achromatic-network-schaudinn-and-hematoxylin-preparations-belaf-1916-states-that-the-endosome-of-peranema-is-always-alveolar-in-struc-ture-even-in-the-interphase-such-an-appearance-seems-to-be-de-pendent-up-image234672906.htmlRMRHP7K6–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. FIG. B. Camera-lucida drawings of nuclei to show variations in form of the endosome: 1-8, Pcranema trichophorum; g, 10, Heieroncma acus; X 1045- mediately surrounding the endosome. Between the endosome and the nuclear membrane lie numerous chromatin granules, or chromomeres, apparently embedded in some sort of an achromatic network (Schaudinn and hematoxylin preparations). Belaf (1916) states that the endosome of Peranema is always alveolar in struc- ture, even in the interphase. Such an appearance seems to be de- pendent up
. The biology of the Protozoa. Protozoa; Protozoa. BIOLOGY OF THE PROTOZOA. Fig. 42.—Flagellum insertion. A, Codosiga hotrytis, with flagellum arising from the nucleus. B, Nagleria histadialis Pusch. with blepharoplast connected by rhizo- plasts with the nucleus, and with independent basal bodies. C, Nagleria gruberi and origin of the blepharoplast from the endosome in the nucleus; (6) blepharoplast; in) nucleus: (r) rhizonlast. (A and B from Doflein, C from Wilson.). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - co Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biology-of-the-protozoa-protozoa-protozoa-biology-of-the-protozoa-fig-42flagellum-insertion-a-codosiga-hotrytis-with-flagellum-arising-from-the-nucleus-b-nagleria-histadialis-pusch-with-blepharoplast-connected-by-rhizo-plasts-with-the-nucleus-and-with-independent-basal-bodies-c-nagleria-gruberi-and-origin-of-the-blepharoplast-from-the-endosome-in-the-nucleus-6-blepharoplast-in-nucleus-r-rhizonlast-a-and-b-from-doflein-c-from-wilson-please-note-that-these-images-are-extracted-from-scanned-page-images-that-may-have-been-digitally-enhanced-for-readability-co-image234604335.htmlRMRHK467–. The biology of the Protozoa. Protozoa; Protozoa. BIOLOGY OF THE PROTOZOA. Fig. 42.—Flagellum insertion. A, Codosiga hotrytis, with flagellum arising from the nucleus. B, Nagleria histadialis Pusch. with blepharoplast connected by rhizo- plasts with the nucleus, and with independent basal bodies. C, Nagleria gruberi and origin of the blepharoplast from the endosome in the nucleus; (6) blepharoplast; in) nucleus: (r) rhizonlast. (A and B from Doflein, C from Wilson.). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - co
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. GAMETIC MEIOSIS IN MONOCYSTIS. 389 give the clearest pictures of the nuclear contents. The total number of gametes formed by both gamonts in this species is approximately 130 and the number of sporoblasts is approxi- mately 65. The protoplasm is uniformly alveolar, clear, and with alveoli of medium size. The nucleus of the gamont is spherical and contains a single spherical endosome.. FJG. 2. First pregametic spindle with 10 chromosomes in one gamont; portion of disintegrating nucleus in the other. Section. Camera lucida. X Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biological-bulletin-biology-zoology-biology-marine-biology-gametic-meiosis-in-monocystis-389-give-the-clearest-pictures-of-the-nuclear-contents-the-total-number-of-gametes-formed-by-both-gamonts-in-this-species-is-approximately-130-and-the-number-of-sporoblasts-is-approxi-mately-65-the-protoplasm-is-uniformly-alveolar-clear-and-with-alveoli-of-medium-size-the-nucleus-of-the-gamont-is-spherical-and-contains-a-single-spherical-endosome-fjg-2-first-pregametic-spindle-with-10-chromosomes-in-one-gamont-portion-of-disintegrating-nucleus-in-the-other-section-camera-lucida-x-image234672630.htmlRMRHP79A–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. GAMETIC MEIOSIS IN MONOCYSTIS. 389 give the clearest pictures of the nuclear contents. The total number of gametes formed by both gamonts in this species is approximately 130 and the number of sporoblasts is approxi- mately 65. The protoplasm is uniformly alveolar, clear, and with alveoli of medium size. The nucleus of the gamont is spherical and contains a single spherical endosome.. FJG. 2. First pregametic spindle with 10 chromosomes in one gamont; portion of disintegrating nucleus in the other. Section. Camera lucida. X
. The biology of the Protozoa. Protozoa; Protozoa. NUCLEI AND KINETIC ELEMENTS 61 practical value is concerned the term karyosome is no more useful than the non-committal term Binnenkorper or Minchin's equivalent term endosome. I would advocate, therefore, discarding altogether. Fig. 24:.—Dileptus anser: A, vegetative individual in culture with nucleus in the form of scattered chromatin granules; B, individual showing the effect of treatment with beef extract on the chromatin granules. (Original.) the term karyosome which seemingly bears the earmarks of some- thing definite in the cell, using Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biology-of-the-protozoa-protozoa-protozoa-nuclei-and-kinetic-elements-61-practical-value-is-concerned-the-term-karyosome-is-no-more-useful-than-the-non-committal-term-binnenkorper-or-minchins-equivalent-term-endosome-i-would-advocate-therefore-discarding-altogether-fig-24dileptus-anser-a-vegetative-individual-in-culture-with-nucleus-in-the-form-of-scattered-chromatin-granules-b-individual-showing-the-effect-of-treatment-with-beef-extract-on-the-chromatin-granules-original-the-term-karyosome-which-seemingly-bears-the-earmarks-of-some-thing-definite-in-the-cell-using-image234604750.htmlRMRHK4N2–. The biology of the Protozoa. Protozoa; Protozoa. NUCLEI AND KINETIC ELEMENTS 61 practical value is concerned the term karyosome is no more useful than the non-committal term Binnenkorper or Minchin's equivalent term endosome. I would advocate, therefore, discarding altogether. Fig. 24:.—Dileptus anser: A, vegetative individual in culture with nucleus in the form of scattered chromatin granules; B, individual showing the effect of treatment with beef extract on the chromatin granules. (Original.) the term karyosome which seemingly bears the earmarks of some- thing definite in the cell, using
. The biology of the protozoa. Protozoa; Protozoa. DERIVED ORGANIZATION 97 matin is similarly divided and distributed but the endosome appar- ently contains some chromatin in addition for a complete division figure is formed from its substances, chromatin-like granules form- ing a nuclear plate (Fig. 52). In other cases, as for example End- amoeba intestinalis and E. cobayae, the peripheral chromatin is broken up into chromomeres, which collect in the center of a spindle. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biology-of-the-protozoa-protozoa-protozoa-derived-organization-97-matin-is-similarly-divided-and-distributed-but-the-endosome-appar-ently-contains-some-chromatin-in-addition-for-a-complete-division-figure-is-formed-from-its-substances-chromatin-like-granules-form-ing-a-nuclear-plate-fig-52-in-other-cases-as-for-example-end-amoeba-intestinalis-and-e-cobayae-the-peripheral-chromatin-is-broken-up-into-chromomeres-which-collect-in-the-center-of-a-spindle-please-note-that-these-images-are-extracted-from-scanned-page-images-that-may-have-been-digitally-enhanced-for-readability-image234538833.htmlRMRHG4JW–. The biology of the protozoa. Protozoa; Protozoa. DERIVED ORGANIZATION 97 matin is similarly divided and distributed but the endosome appar- ently contains some chromatin in addition for a complete division figure is formed from its substances, chromatin-like granules form- ing a nuclear plate (Fig. 52). In other cases, as for example End- amoeba intestinalis and E. cobayae, the peripheral chromatin is broken up into chromomeres, which collect in the center of a spindle. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. LIFE HISTORIES OF EUGLENIDA 153 pares for division before the kinetic organelles. The endosome elon- gates; simultaneously the chromatin forms a thin spireme (Kig. 17) of ever increasing thickness. It is not a smooth spireme, hut a headed one, if. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Marine Biological Laboratory (Woods Hole, Mass. ); Marine Bio Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biological-bulletin-biology-zoology-biology-marine-biology-life-histories-of-euglenida-153-pares-for-division-before-the-kinetic-organelles-the-endosome-elon-gates-simultaneously-the-chromatin-forms-a-thin-spireme-kig-17-of-ever-increasing-thickness-it-is-not-a-smooth-spireme-hut-a-headed-one-if-please-note-that-these-images-are-extracted-from-scanned-page-images-that-may-have-been-digitally-enhanced-for-readability-coloration-and-appearance-of-these-illustrations-may-not-perfectly-resemble-the-original-work-marine-biological-laboratory-woods-hole-mass-marine-bio-image234671709.htmlRMRHP64D–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. LIFE HISTORIES OF EUGLENIDA 153 pares for division before the kinetic organelles. The endosome elon- gates; simultaneously the chromatin forms a thin spireme (Kig. 17) of ever increasing thickness. It is not a smooth spireme, hut a headed one, if. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Marine Biological Laboratory (Woods Hole, Mass. ); Marine Bio
. The biology of the Protozoa. Protozoa; Protozoa. Fig. M. — Chilodon sp. Macronucleus with endosome and cndobasal body (end) {mo) Mouth surrounded by pharyngeal basket. (Original.) of chromatin or plastin, or in a combination of both. These in some cases form the poles of t^^-pical spindles, but in the majority of cases, apart from the polar granules and the connecting centrodesmose, there is little evidence of a t^7)ical spindle.. Fig. 3.5.—Endamoeba dysenterioe (Councilman and Lafleur). Two stages in the metamorphosis of endosome and endoba.«al body. (After Hartmann.) In some cases this typ Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biology-of-the-protozoa-protozoa-protozoa-fig-m-chilodon-sp-macronucleus-with-endosome-and-cndobasal-body-end-mo-mouth-surrounded-by-pharyngeal-basket-original-of-chromatin-or-plastin-or-in-a-combination-of-both-these-in-some-cases-form-the-poles-of-t-pical-spindles-but-in-the-majority-of-cases-apart-from-the-polar-granules-and-the-connecting-centrodesmose-there-is-little-evidence-of-a-t7ical-spindle-fig-35endamoeba-dysenterioe-councilman-and-lafleur-two-stages-in-the-metamorphosis-of-endosome-and-endobaal-body-after-hartmann-in-some-cases-this-typ-image234604568.htmlRMRHK4EG–. The biology of the Protozoa. Protozoa; Protozoa. Fig. M. — Chilodon sp. Macronucleus with endosome and cndobasal body (end) {mo) Mouth surrounded by pharyngeal basket. (Original.) of chromatin or plastin, or in a combination of both. These in some cases form the poles of t^^-pical spindles, but in the majority of cases, apart from the polar granules and the connecting centrodesmose, there is little evidence of a t^7)ical spindle.. Fig. 3.5.—Endamoeba dysenterioe (Councilman and Lafleur). Two stages in the metamorphosis of endosome and endoba.«al body. (After Hartmann.) In some cases this typ
. The biology of the protozoa. Protozoa; Protozoa. Fig. 13.—Diphasic rhizopods. A, B, C, heliozoa-like and flagellated stages of Dimorpha mutans, (After Blochman.) D, E, F, Dimastigamoeba gruberi, ameboid and flagellated stages; E, origin of blepharoplast (bl) from endosome; r, rhizoplast. (After C. W. Wilson.) attaching portion. Some for example are attached by the proto- plasm of the posterior end of a cylindrical body (e. g., Cothurnia, Vaginicolla, etc.); others by the more or less stalk-like attenuated end of the body (e. g., Scyphidia, Podophrya, etc.); and others by chitinous stalks of Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biology-of-the-protozoa-protozoa-protozoa-fig-13diphasic-rhizopods-a-b-c-heliozoa-like-and-flagellated-stages-of-dimorpha-mutans-after-blochman-d-e-f-dimastigamoeba-gruberi-ameboid-and-flagellated-stages-e-origin-of-blepharoplast-bl-from-endosome-r-rhizoplast-after-c-w-wilson-attaching-portion-some-for-example-are-attached-by-the-proto-plasm-of-the-posterior-end-of-a-cylindrical-body-e-g-cothurnia-vaginicolla-etc-others-by-the-more-or-less-stalk-like-attenuated-end-of-the-body-e-g-scyphidia-podophrya-etc-and-others-by-chitinous-stalks-of-image234604805.htmlRMRHK4R1–. The biology of the protozoa. Protozoa; Protozoa. Fig. 13.—Diphasic rhizopods. A, B, C, heliozoa-like and flagellated stages of Dimorpha mutans, (After Blochman.) D, E, F, Dimastigamoeba gruberi, ameboid and flagellated stages; E, origin of blepharoplast (bl) from endosome; r, rhizoplast. (After C. W. Wilson.) attaching portion. Some for example are attached by the proto- plasm of the posterior end of a cylindrical body (e. g., Cothurnia, Vaginicolla, etc.); others by the more or less stalk-like attenuated end of the body (e. g., Scyphidia, Podophrya, etc.); and others by chitinous stalks of
![. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. FIG. 21. Same stage, long type. FIG. 22. Optical section through two daughter nuclei of Distigma at ana- phase. Sixteen chromosomes can be counted. FIG. 23. Telophase, Distigma. The endosome is U-shaped, and the chromo- somes are still distinguishable. FIG. 24. A " young" Distigma. Chromosomes still distinguishable, and the endosome still drawn to a point. flagella then grow out quickly from the new blepharoplasts. The two pairs have assumed positions approximately at opposite poles of the division figure at the ti Stock Photo](https://c8.alamy.com/comp/RHP60G/the-biological-bulletin-biology-zoology-biology-marine-biology-fig-21-same-stage-long-type-fig-22-optical-section-through-two-daughter-nuclei-of-distigma-at-ana-phase-sixteen-chromosomes-can-be-counted-fig-23-telophase-distigma-the-endosome-is-u-shaped-and-the-chromo-somes-are-still-distinguishable-fig-24-a-quot-youngquot-distigma-chromosomes-still-distinguishable-and-the-endosome-still-drawn-to-a-point-flagella-then-grow-out-quickly-from-the-new-blepharoplasts-the-two-pairs-have-assumed-positions-approximately-at-opposite-poles-of-the-division-figure-at-the-ti-RHP60G.jpg ". The Biological bulletin. Biology; Zoology; Biology; Marine Biology. FIG. 21. Same stage, long type. FIG. 22. Optical section through two daughter nuclei of Distigma at ana- phase. Sixteen chromosomes can be counted. FIG. 23. Telophase, Distigma. The endosome is U-shaped, and the chromo- somes are still distinguishable. FIG. 24. A " young" Distigma. Chromosomes still distinguishable, and the endosome still drawn to a point. flagella then grow out quickly from the new blepharoplasts. The two pairs have assumed positions approximately at opposite poles of the division figure at the ti Stock Photo")
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. FIG. 21. Same stage, long type. FIG. 22. Optical section through two daughter nuclei of Distigma at ana- phase. Sixteen chromosomes can be counted. FIG. 23. Telophase, Distigma. The endosome is U-shaped, and the chromo- somes are still distinguishable. FIG. 24. A " young" Distigma. Chromosomes still distinguishable, and the endosome still drawn to a point. flagella then grow out quickly from the new blepharoplasts. The two pairs have assumed positions approximately at opposite poles of the division figure at the ti Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biological-bulletin-biology-zoology-biology-marine-biology-fig-21-same-stage-long-type-fig-22-optical-section-through-two-daughter-nuclei-of-distigma-at-ana-phase-sixteen-chromosomes-can-be-counted-fig-23-telophase-distigma-the-endosome-is-u-shaped-and-the-chromo-somes-are-still-distinguishable-fig-24-a-quot-youngquot-distigma-chromosomes-still-distinguishable-and-the-endosome-still-drawn-to-a-point-flagella-then-grow-out-quickly-from-the-new-blepharoplasts-the-two-pairs-have-assumed-positions-approximately-at-opposite-poles-of-the-division-figure-at-the-ti-image234671600.htmlRMRHP60G–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. FIG. 21. Same stage, long type. FIG. 22. Optical section through two daughter nuclei of Distigma at ana- phase. Sixteen chromosomes can be counted. FIG. 23. Telophase, Distigma. The endosome is U-shaped, and the chromo- somes are still distinguishable. FIG. 24. A " young" Distigma. Chromosomes still distinguishable, and the endosome still drawn to a point. flagella then grow out quickly from the new blepharoplasts. The two pairs have assumed positions approximately at opposite poles of the division figure at the ti
. The Biological bulletin. Biology; Zoology; Marine biology. Plate I Fig. 2. Side view of the animal to show characteristic convex shape. Fig. 3. Ventral view of an animal to show pseudopodia which are extended from the mass of cytoplasm extending out of and over the ventral lip of the mouth depression. Fig. 4. Early prophase. The chromatin has formed into a number of irregular masses, apparently separate from each other and not forming a spireme. The endosome is disappearing. Two daughter blepharoplasts are present, and two new and short flagella are growing out from them through the mouth de Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biological-bulletin-biology-zoology-marine-biology-plate-i-fig-2-side-view-of-the-animal-to-show-characteristic-convex-shape-fig-3-ventral-view-of-an-animal-to-show-pseudopodia-which-are-extended-from-the-mass-of-cytoplasm-extending-out-of-and-over-the-ventral-lip-of-the-mouth-depression-fig-4-early-prophase-the-chromatin-has-formed-into-a-number-of-irregular-masses-apparently-separate-from-each-other-and-not-forming-a-spireme-the-endosome-is-disappearing-two-daughter-blepharoplasts-are-present-and-two-new-and-short-flagella-are-growing-out-from-them-through-the-mouth-de-image234628865.htmlRMRHM7E9–. The Biological bulletin. Biology; Zoology; Marine biology. Plate I Fig. 2. Side view of the animal to show characteristic convex shape. Fig. 3. Ventral view of an animal to show pseudopodia which are extended from the mass of cytoplasm extending out of and over the ventral lip of the mouth depression. Fig. 4. Early prophase. The chromatin has formed into a number of irregular masses, apparently separate from each other and not forming a spireme. The endosome is disappearing. Two daughter blepharoplasts are present, and two new and short flagella are growing out from them through the mouth de
. The biology of the Protozoa. Protozoa; Protozoa. FiG. 62.—Nuclear divi.sion in Collodictyuni triciliatum. (After Belar.) matin is similarly divided and distributed but the endosome appar- ently contains some chromatin in addition for a complete division figure is formed from its substances, chromatin-like granules forming a nuclear plate (Fig. 39, p. 82). In other cases, as for example Endamoeba intestinalis and E. cobayce, the peripheral chromatin is broken up into chromomeres, which collect in the center of a spindle from the linin of the nucleus and with centrioles at the poles (Fig. 26, Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biology-of-the-protozoa-protozoa-protozoa-fig-62nuclear-division-in-collodictyuni-triciliatum-after-belar-matin-is-similarly-divided-and-distributed-but-the-endosome-appar-ently-contains-some-chromatin-in-addition-for-a-complete-division-figure-is-formed-from-its-substances-chromatin-like-granules-forming-a-nuclear-plate-fig-39-p-82-in-other-cases-as-for-example-endamoeba-intestinalis-and-e-cobayce-the-peripheral-chromatin-is-broken-up-into-chromomeres-which-collect-in-the-center-of-a-spindle-from-the-linin-of-the-nucleus-and-with-centrioles-at-the-poles-fig-26-image234603918.htmlRMRHK3KA–. The biology of the Protozoa. Protozoa; Protozoa. FiG. 62.—Nuclear divi.sion in Collodictyuni triciliatum. (After Belar.) matin is similarly divided and distributed but the endosome appar- ently contains some chromatin in addition for a complete division figure is formed from its substances, chromatin-like granules forming a nuclear plate (Fig. 39, p. 82). In other cases, as for example Endamoeba intestinalis and E. cobayce, the peripheral chromatin is broken up into chromomeres, which collect in the center of a spindle from the linin of the nucleus and with centrioles at the poles (Fig. 26,
. The biology of the protozoa. Protozoa; Protozoa. Fig. 52. — Amoeba vespertilio Dof. Origin of the spindle within the nucleus (1, 2), nuclear division (5, 6, 7), and reconstruction of nuclei after division (3, 4, 8, 9). (After Doflein.) from the linin of the nucleus and with centrioles at the poles. In Chlamydophrys the endosome apparently divides before it disap- pears, the chromosomes being formed from the peripheral chromatin. In still another general type, derived also from vesicular nuclei, the chromatin in the form of chromomeres is suspended in a loose reticulum. In Opalina chromatin a Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biology-of-the-protozoa-protozoa-protozoa-fig-52-amoeba-vespertilio-dof-origin-of-the-spindle-within-the-nucleus-1-2-nuclear-division-5-6-7-and-reconstruction-of-nuclei-after-division-3-4-8-9-after-doflein-from-the-linin-of-the-nucleus-and-with-centrioles-at-the-poles-in-chlamydophrys-the-endosome-apparently-divides-before-it-disap-pears-the-chromosomes-being-formed-from-the-peripheral-chromatin-in-still-another-general-type-derived-also-from-vesicular-nuclei-the-chromatin-in-the-form-of-chromomeres-is-suspended-in-a-loose-reticulum-in-opalina-chromatin-a-image234604218.htmlRMRHK422–. The biology of the protozoa. Protozoa; Protozoa. Fig. 52. — Amoeba vespertilio Dof. Origin of the spindle within the nucleus (1, 2), nuclear division (5, 6, 7), and reconstruction of nuclei after division (3, 4, 8, 9). (After Doflein.) from the linin of the nucleus and with centrioles at the poles. In Chlamydophrys the endosome apparently divides before it disap- pears, the chromosomes being formed from the peripheral chromatin. In still another general type, derived also from vesicular nuclei, the chromatin in the form of chromomeres is suspended in a loose reticulum. In Opalina chromatin a
. The biology of the Protozoa. Protozoa; Protozoa. 74 BIOLOGY OF THE PROTOZOA micronuclei {Paramecium caudaium, P. bursaria, etc.), which in some cases assumes the form of a centriole, forming a typical cen- trodesmus during division {e. g., in first maturation spindles of Uroleptus mohilis).. Fig. 33.—Bodo ovatus Stein (edax, Belar). (1) Vegetative individual with two flagella; blepharoplast (6^ and nucleus with endosome. (2 to G) Division of the basal bodies, blepharoplast and nucleus; (7 to 10) completion of nuclear division and division of cell body. (After Belar, from Dofiein.) 3. KINETIC Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biology-of-the-protozoa-protozoa-protozoa-74-biology-of-the-protozoa-micronuclei-paramecium-caudaium-p-bursaria-etc-which-in-some-cases-assumes-the-form-of-a-centriole-forming-a-typical-cen-trodesmus-during-division-e-g-in-first-maturation-spindles-of-uroleptus-mohilis-fig-33bodo-ovatus-stein-edax-belar-1-vegetative-individual-with-two-flagella-blepharoplast-6-and-nucleus-with-endosome-2-to-g-division-of-the-basal-bodies-blepharoplast-and-nucleus-7-to-10-completion-of-nuclear-division-and-division-of-cell-body-after-belar-from-dofiein-3-kinetic-image234604601.htmlRMRHK4FN–. The biology of the Protozoa. Protozoa; Protozoa. 74 BIOLOGY OF THE PROTOZOA micronuclei {Paramecium caudaium, P. bursaria, etc.), which in some cases assumes the form of a centriole, forming a typical cen- trodesmus during division {e. g., in first maturation spindles of Uroleptus mohilis).. Fig. 33.—Bodo ovatus Stein (edax, Belar). (1) Vegetative individual with two flagella; blepharoplast (6^ and nucleus with endosome. (2 to G) Division of the basal bodies, blepharoplast and nucleus; (7 to 10) completion of nuclear division and division of cell body. (After Belar, from Dofiein.) 3. KINETIC
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. RICHARD P. HALL AND WILLIAM N. POWELL. as much as ioo/x, in length. Contrary to the description of Tann- reuther for Pcranema, Schaeffer believes that in Jenningsia the pharyngeal-rods are not protruded in feeding. THE NUCLEUS. In Pcrancma trichophorum the nucleus of the interphase con- tains an endosome which is often irregular in outline or fragmented (Fig. B), but commonly more or less ovoid in shape (PI. I., Figs, i, 2). In stained preparations there is usually a clear area im-. Please note that these images are extracte Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biological-bulletin-biology-zoology-biology-marine-biology-richard-p-hall-and-william-n-powell-as-much-as-ioox-in-length-contrary-to-the-description-of-tann-reuther-for-pcranema-schaeffer-believes-that-in-jenningsia-the-pharyngeal-rods-are-not-protruded-in-feeding-the-nucleus-in-pcrancma-trichophorum-the-nucleus-of-the-interphase-con-tains-an-endosome-which-is-often-irregular-in-outline-or-fragmented-fig-b-but-commonly-more-or-less-ovoid-in-shape-pi-i-figs-i-2-in-stained-preparations-there-is-usually-a-clear-area-im-please-note-that-these-images-are-extracte-image234673019.htmlRMRHP7R7–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. RICHARD P. HALL AND WILLIAM N. POWELL. as much as ioo/x, in length. Contrary to the description of Tann- reuther for Pcranema, Schaeffer believes that in Jenningsia the pharyngeal-rods are not protruded in feeding. THE NUCLEUS. In Pcrancma trichophorum the nucleus of the interphase con- tains an endosome which is often irregular in outline or fragmented (Fig. B), but commonly more or less ovoid in shape (PI. I., Figs, i, 2). In stained preparations there is usually a clear area im-. Please note that these images are extracte
. Bulletin. Natural history; Natuurlijke historie. SYSTEMATICS 29 as 10-12 spicules. The meshes are thus often much less than a spicule length in maximum width. Only a few dermal pores, 20-40 /x in diameter, were detected. Endosome. The internal skeleton is similar to that of the dermal layer. Most, if not all, of the spicules are bound into the network. Spicules. Oxeas, thin, straight to slightly curved, 145-174 x 3-5 p.. The points may be fusiform, hastate or mucronate. Many spicules are narrow but rounded at the ends. A small minority of spicules are styles or strongyles. Their rounded ends Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/bulletin-natural-history-natuurlijke-historie-systematics-29-as-10-12-spicules-the-meshes-are-thus-often-much-less-than-a-spicule-length-in-maximum-width-only-a-few-dermal-pores-20-40-x-in-diameter-were-detected-endosome-the-internal-skeleton-is-similar-to-that-of-the-dermal-layer-most-if-not-all-of-the-spicules-are-bound-into-the-network-spicules-oxeas-thin-straight-to-slightly-curved-145-174-x-3-5-p-the-points-may-be-fusiform-hastate-or-mucronate-many-spicules-are-narrow-but-rounded-at-the-ends-a-small-minority-of-spicules-are-styles-or-strongyles-their-rounded-ends-image234224386.htmlRMRH1RGJ–. Bulletin. Natural history; Natuurlijke historie. SYSTEMATICS 29 as 10-12 spicules. The meshes are thus often much less than a spicule length in maximum width. Only a few dermal pores, 20-40 /x in diameter, were detected. Endosome. The internal skeleton is similar to that of the dermal layer. Most, if not all, of the spicules are bound into the network. Spicules. Oxeas, thin, straight to slightly curved, 145-174 x 3-5 p.. The points may be fusiform, hastate or mucronate. Many spicules are narrow but rounded at the ends. A small minority of spicules are styles or strongyles. Their rounded ends
. The biology of the Protozoa. Protozoa; Protozoa. NUCLEI AND KINETIC ELEMENTS 77 some t}-pes of Protozoa, form the focal points of the mitotic spindle. In man^' Protozoa minute granules may be embedded in a matrix. Fig. M. — Chilodon sp. Macronucleus with endosome and cndobasal body (end) {mo) Mouth surrounded by pharyngeal basket. (Original.) of chromatin or plastin, or in a combination of both. These in some cases form the poles of t^^-pical spindles, but in the majority of cases, apart from the polar granules and the connecting centrodesmose, there is little evidence of a t^7)ical spindle. Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biology-of-the-protozoa-protozoa-protozoa-nuclei-and-kinetic-elements-77-some-t-pes-of-protozoa-form-the-focal-points-of-the-mitotic-spindle-in-man-protozoa-minute-granules-may-be-embedded-in-a-matrix-fig-m-chilodon-sp-macronucleus-with-endosome-and-cndobasal-body-end-mo-mouth-surrounded-by-pharyngeal-basket-original-of-chromatin-or-plastin-or-in-a-combination-of-both-these-in-some-cases-form-the-poles-of-t-pical-spindles-but-in-the-majority-of-cases-apart-from-the-polar-granules-and-the-connecting-centrodesmose-there-is-little-evidence-of-a-t7ical-spindle-image234604584.htmlRMRHK4F4–. The biology of the Protozoa. Protozoa; Protozoa. NUCLEI AND KINETIC ELEMENTS 77 some t}-pes of Protozoa, form the focal points of the mitotic spindle. In man^' Protozoa minute granules may be embedded in a matrix. Fig. M. — Chilodon sp. Macronucleus with endosome and cndobasal body (end) {mo) Mouth surrounded by pharyngeal basket. (Original.) of chromatin or plastin, or in a combination of both. These in some cases form the poles of t^^-pical spindles, but in the majority of cases, apart from the polar granules and the connecting centrodesmose, there is little evidence of a t^7)ical spindle.
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 238 A. L. MORAN 12A mv. Figure 12. Transmission electron micrographs of sections from the velum and foot of Littorina sitkana larvae exposed to ferritin for 12 h. (A) High-magnification view of cell surface of a prototrochal cell of the velum, showing a prototrochal ciliuni, surface microvilli, a mitochondrion, and an endosome containing electron-dense material (ferritin). Two endocytotic profiles are evident at the cell surface membrane. Inset; lower magnification view of the same area of the larva. Magnified area shown in Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biological-bulletin-biology-zoology-biology-marine-biology-238-a-l-moran-12a-mv-figure-12-transmission-electron-micrographs-of-sections-from-the-velum-and-foot-of-littorina-sitkana-larvae-exposed-to-ferritin-for-12-h-a-high-magnification-view-of-cell-surface-of-a-prototrochal-cell-of-the-velum-showing-a-prototrochal-ciliuni-surface-microvilli-a-mitochondrion-and-an-endosome-containing-electron-dense-material-ferritin-two-endocytotic-profiles-are-evident-at-the-cell-surface-membrane-inset-lower-magnification-view-of-the-same-area-of-the-larva-magnified-area-shown-in-image234631635.htmlRMRHMB17–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 238 A. L. MORAN 12A mv. Figure 12. Transmission electron micrographs of sections from the velum and foot of Littorina sitkana larvae exposed to ferritin for 12 h. (A) High-magnification view of cell surface of a prototrochal cell of the velum, showing a prototrochal ciliuni, surface microvilli, a mitochondrion, and an endosome containing electron-dense material (ferritin). Two endocytotic profiles are evident at the cell surface membrane. Inset; lower magnification view of the same area of the larva. Magnified area shown in
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. FIG. 17. Optical section transverse to the long axis of the endosome of Distigma. The thin spireme is well shown. Four flagella are already present. FIG. 18. The metaphase plate in Distigma. The chromosomes are longi- tudinally split, and are U's or Vs. FIG. 19. Metaphase plate in Distigma. The chromosomes have straightened out to encircle the endosome as a cordon of beaded rods. FIG. 20. Anaphase in Distigma. At least one of the chromosomes has not yet parted at the apex of the V. The blepharoplasts are manifestly not the p Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biological-bulletin-biology-zoology-biology-marine-biology-fig-17-optical-section-transverse-to-the-long-axis-of-the-endosome-of-distigma-the-thin-spireme-is-well-shown-four-flagella-are-already-present-fig-18-the-metaphase-plate-in-distigma-the-chromosomes-are-longi-tudinally-split-and-are-us-or-vs-fig-19-metaphase-plate-in-distigma-the-chromosomes-have-straightened-out-to-encircle-the-endosome-as-a-cordon-of-beaded-rods-fig-20-anaphase-in-distigma-at-least-one-of-the-chromosomes-has-not-yet-parted-at-the-apex-of-the-v-the-blepharoplasts-are-manifestly-not-the-p-image234671657.htmlRMRHP62H–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. FIG. 17. Optical section transverse to the long axis of the endosome of Distigma. The thin spireme is well shown. Four flagella are already present. FIG. 18. The metaphase plate in Distigma. The chromosomes are longi- tudinally split, and are U's or Vs. FIG. 19. Metaphase plate in Distigma. The chromosomes have straightened out to encircle the endosome as a cordon of beaded rods. FIG. 20. Anaphase in Distigma. At least one of the chromosomes has not yet parted at the apex of the V. The blepharoplasts are manifestly not the p
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 236 A. L. MORAN 10A. Figure 10. Transmission electron micrographs of the velum of Littorina sitkana exposed to ferritin for 12 h. (A) Unstained section of a ciliated cell of the velum. The plasma membrane is to the upper left. Cells contain numerous irregularly shaped endosomes 1-5 jxm in diameter that are filled with a dark (electron-dense) granular material. One endosome is labeled, and other concentrations of ferritin are indicated with arrows. (B) High- magnification view of the electron-dense material contained within t Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biological-bulletin-biology-zoology-biology-marine-biology-236-a-l-moran-10a-figure-10-transmission-electron-micrographs-of-the-velum-of-littorina-sitkana-exposed-to-ferritin-for-12-h-a-unstained-section-of-a-ciliated-cell-of-the-velum-the-plasma-membrane-is-to-the-upper-left-cells-contain-numerous-irregularly-shaped-endosomes-1-5-jxm-in-diameter-that-are-filled-with-a-dark-electron-dense-granular-material-one-endosome-is-labeled-and-other-concentrations-of-ferritin-are-indicated-with-arrows-b-high-magnification-view-of-the-electron-dense-material-contained-within-t-image234631651.htmlRMRHMB1R–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 236 A. L. MORAN 10A. Figure 10. Transmission electron micrographs of the velum of Littorina sitkana exposed to ferritin for 12 h. (A) Unstained section of a ciliated cell of the velum. The plasma membrane is to the upper left. Cells contain numerous irregularly shaped endosomes 1-5 jxm in diameter that are filled with a dark (electron-dense) granular material. One endosome is labeled, and other concentrations of ferritin are indicated with arrows. (B) High- magnification view of the electron-dense material contained within t
. Cytological observations on Endamoeba blattae. Cells; Endamoeba blattae. END AMOEBA BLA TTAE—MEGLITSCH 29. Text Fig. I. Schematized Diagram of Nucleus of Trophic E. blattae (1) Nuclear membrane; (2) peripheral zone; (3) peripheral ground-plasm; (4) endosome; (5) central region; (6) centriole; (7) central ground-plasm; (8) peripheral granule; (9) peripheral spherule.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Meglits Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/cytological-observations-on-endamoeba-blattae-cells-endamoeba-blattae-end-amoeba-bla-ttaemeglitsch-29-text-fig-i-schematized-diagram-of-nucleus-of-trophic-e-blattae-1-nuclear-membrane-2-peripheral-zone-3-peripheral-ground-plasm-4-endosome-5-central-region-6-centriole-7-central-ground-plasm-8-peripheral-granule-9-peripheral-spherule-please-note-that-these-images-are-extracted-from-scanned-page-images-that-may-have-been-digitally-enhanced-for-readability-coloration-and-appearance-of-these-illustrations-may-not-perfectly-resemble-the-original-work-meglits-image231811306.htmlRMRD3WK6–. Cytological observations on Endamoeba blattae. Cells; Endamoeba blattae. END AMOEBA BLA TTAE—MEGLITSCH 29. Text Fig. I. Schematized Diagram of Nucleus of Trophic E. blattae (1) Nuclear membrane; (2) peripheral zone; (3) peripheral ground-plasm; (4) endosome; (5) central region; (6) centriole; (7) central ground-plasm; (8) peripheral granule; (9) peripheral spherule.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Meglits
. The biology of the Protozoa. Protozoa; Protozoa. •:^Z.<i. P-i. rr Fig. 12.—Diphasic rhizopods. A, B, C, heliozoa-like and flagellated stages of Dimorpha jnutans. (After Blochman.) D, E, F, Nagleria gruberi, amoeboid and flagellated stages; E, origin of blepharoplast (bl) from endosome; r, rhizoplast. (After C. W. Wilson.). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Calkins, Gary N. (Gary Nathan), b. 1869. Philadel Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biology-of-the-protozoa-protozoa-protozoa-zlti-p-i-rr-fig-12diphasic-rhizopods-a-b-c-heliozoa-like-and-flagellated-stages-of-dimorpha-jnutans-after-blochman-d-e-f-nagleria-gruberi-amoeboid-and-flagellated-stages-e-origin-of-blepharoplast-bl-from-endosome-r-rhizoplast-after-c-w-wilson-please-note-that-these-images-are-extracted-from-scanned-page-images-that-may-have-been-digitally-enhanced-for-readability-coloration-and-appearance-of-these-illustrations-may-not-perfectly-resemble-the-original-work-calkins-gary-n-gary-nathan-b-1869-philadel-image234605032.htmlRMRHK534–. The biology of the Protozoa. Protozoa; Protozoa. •:^Z.<i. P-i. rr Fig. 12.—Diphasic rhizopods. A, B, C, heliozoa-like and flagellated stages of Dimorpha jnutans. (After Blochman.) D, E, F, Nagleria gruberi, amoeboid and flagellated stages; E, origin of blepharoplast (bl) from endosome; r, rhizoplast. (After C. W. Wilson.). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Calkins, Gary N. (Gary Nathan), b. 1869. Philadel
. The biology of the protozoa. Protozoa; Protozoa. u.m. Fig. 60.—Flagellum insertion. A, Phialonema cyclostomwm; B, Chilomastix nu snili; <', the same, encysted, {u.m.) Margin of undulating membrane in cytostome. (A, Original; B, C, after Kofoid and Swezy.) of a blepharoplast, as shown by Goodey (1916) in the flagellate Prowazekia (Bodo) saltans, or by Kofoid and Swezy (1915) in Trichomonas augusta. Again, just as a centriole may be freed from its enclosing chromatoid substance in an endosome, so may the basal body be freed from the blepharoplast. In a similar way the blepharoplast may be c Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biology-of-the-protozoa-protozoa-protozoa-um-fig-60flagellum-insertion-a-phialonema-cyclostomwm-b-chilomastix-nu-snili-lt-the-same-encysted-um-margin-of-undulating-membrane-in-cytostome-a-original-b-c-after-kofoid-and-swezy-of-a-blepharoplast-as-shown-by-goodey-1916-in-the-flagellate-prowazekia-bodo-saltans-or-by-kofoid-and-swezy-1915-in-trichomonas-augusta-again-just-as-a-centriole-may-be-freed-from-its-enclosing-chromatoid-substance-in-an-endosome-so-may-the-basal-body-be-freed-from-the-blepharoplast-in-a-similar-way-the-blepharoplast-may-be-c-image234604006.htmlRMRHK3PE–. The biology of the protozoa. Protozoa; Protozoa. u.m. Fig. 60.—Flagellum insertion. A, Phialonema cyclostomwm; B, Chilomastix nu snili; <', the same, encysted, {u.m.) Margin of undulating membrane in cytostome. (A, Original; B, C, after Kofoid and Swezy.) of a blepharoplast, as shown by Goodey (1916) in the flagellate Prowazekia (Bodo) saltans, or by Kofoid and Swezy (1915) in Trichomonas augusta. Again, just as a centriole may be freed from its enclosing chromatoid substance in an endosome, so may the basal body be freed from the blepharoplast. In a similar way the blepharoplast may be c
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. D TEXT-FIGURE B. Diagrams showing the suggested homology between the kinetic elements of Euglena agilis and other flagellates. A, Cryplobia sp.; B. Herpetomonas musca-domesticae; C, Trypanosoma cruzi; D, Euglena agilis. (b) Blepharoplast; (r) rhizoplast; (p) parabasal body; (en) endosome; (n) nucleus; (par. ho.) parabasal homologue. (A and B from Calkins after Swezy;) C from Calkins after McCulloch.). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biological-bulletin-biology-zoology-biology-marine-biology-d-text-figure-b-diagrams-showing-the-suggested-homology-between-the-kinetic-elements-of-euglena-agilis-and-other-flagellates-a-cryplobia-sp-b-herpetomonas-musca-domesticae-c-trypanosoma-cruzi-d-euglena-agilis-b-blepharoplast-r-rhizoplast-p-parabasal-body-en-endosome-n-nucleus-par-ho-parabasal-homologue-a-and-b-from-calkins-after-swezy-c-from-calkins-after-mcculloch-please-note-that-these-images-are-extracted-from-scanned-page-images-that-may-have-been-digitally-enhanced-for-readability-image234672759.htmlRMRHP7DY–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. D TEXT-FIGURE B. Diagrams showing the suggested homology between the kinetic elements of Euglena agilis and other flagellates. A, Cryplobia sp.; B. Herpetomonas musca-domesticae; C, Trypanosoma cruzi; D, Euglena agilis. (b) Blepharoplast; (r) rhizoplast; (p) parabasal body; (en) endosome; (n) nucleus; (par. ho.) parabasal homologue. (A and B from Calkins after Swezy;) C from Calkins after McCulloch.). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability -
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. PRELIMINARY NOTE ON A NEW PROTOZOAN PARASITE OF EARTHWORMS OF THE GENUS EUTYPHCEUS. G. E. GATES. JUDSON COLLEGE, RANGOON, BURMA. In the course of a recent study of the earthworms of Burma a large protozoan parasite of unusual form was frequently en- countered. The writer can discover no reference to any parasitic animal of similar form in the literature. The following descrip-. -V—-n FIG. i. Part of a trophozoite. (Camera lucida.) s.r., secondary ramus; p.r., primary ramus; n., nuclear membrane; e., endosome. tion will there Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biological-bulletin-biology-zoology-biology-marine-biology-preliminary-note-on-a-new-protozoan-parasite-of-earthworms-of-the-genus-eutyphceus-g-e-gates-judson-college-rangoon-burma-in-the-course-of-a-recent-study-of-the-earthworms-of-burma-a-large-protozoan-parasite-of-unusual-form-was-frequently-en-countered-the-writer-can-discover-no-reference-to-any-parasitic-animal-of-similar-form-in-the-literature-the-following-descrip-v-n-fig-i-part-of-a-trophozoite-camera-lucida-sr-secondary-ramus-pr-primary-ramus-n-nuclear-membrane-e-endosome-tion-will-there-image234672245.htmlRMRHP6RH–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. PRELIMINARY NOTE ON A NEW PROTOZOAN PARASITE OF EARTHWORMS OF THE GENUS EUTYPHCEUS. G. E. GATES. JUDSON COLLEGE, RANGOON, BURMA. In the course of a recent study of the earthworms of Burma a large protozoan parasite of unusual form was frequently en- countered. The writer can discover no reference to any parasitic animal of similar form in the literature. The following descrip-. -V—-n FIG. i. Part of a trophozoite. (Camera lucida.) s.r., secondary ramus; p.r., primary ramus; n., nuclear membrane; e., endosome. tion will there
. Cytological observations on Endamoeba blattae. Cells; Endamoeba blattae. Text Fig. I. Schematized Diagram of Nucleus of Trophic E. blattae (1) Nuclear membrane; (2) peripheral zone; (3) peripheral ground-plasm; (4) endosome; (5) central region; (6) centriole; (7) central ground-plasm; (8) peripheral granule; (9) peripheral spherule.. Text Fig. II. Schematized Drawing of Dividing Nucleus of Trophic E. blattae (1) Nuclear membrane; (2) endosomal spherule; (3) peripheral spherule; (4) peripheral granule; (5) chromosome. Central region.—The region lying within the endosomal girdle in the interph Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/cytological-observations-on-endamoeba-blattae-cells-endamoeba-blattae-text-fig-i-schematized-diagram-of-nucleus-of-trophic-e-blattae-1-nuclear-membrane-2-peripheral-zone-3-peripheral-ground-plasm-4-endosome-5-central-region-6-centriole-7-central-ground-plasm-8-peripheral-granule-9-peripheral-spherule-text-fig-ii-schematized-drawing-of-dividing-nucleus-of-trophic-e-blattae-1-nuclear-membrane-2-endosomal-spherule-3-peripheral-spherule-4-peripheral-granule-5-chromosome-central-regionthe-region-lying-within-the-endosomal-girdle-in-the-interph-image231811293.htmlRMRD3WJN–. Cytological observations on Endamoeba blattae. Cells; Endamoeba blattae. Text Fig. I. Schematized Diagram of Nucleus of Trophic E. blattae (1) Nuclear membrane; (2) peripheral zone; (3) peripheral ground-plasm; (4) endosome; (5) central region; (6) centriole; (7) central ground-plasm; (8) peripheral granule; (9) peripheral spherule.. Text Fig. II. Schematized Drawing of Dividing Nucleus of Trophic E. blattae (1) Nuclear membrane; (2) endosomal spherule; (3) peripheral spherule; (4) peripheral granule; (5) chromosome. Central region.—The region lying within the endosomal girdle in the interph
. The biology of the Protozoa. Protozoa; Protozoa. P-i. rr Fig. 12.—Diphasic rhizopods. A, B, C, heliozoa-like and flagellated stages of Dimorpha jnutans. (After Blochman.) D, E, F, Nagleria gruberi, amoeboid and flagellated stages; E, origin of blepharoplast (bl) from endosome; r, rhizoplast. (After C. W. Wilson.). flagellates Phacus lom/icauda, Phacus jryrum, Heferonema sp,, etc., and in the ciliates M(iiiria, Paramecium, Mctopus sigmoidcs, etc., the spiral twist is highly characteristic (Fig. 14), Bilateral symmetry is of rare occurrence among Protozoa; indeed there seems to be only one rea Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biology-of-the-protozoa-protozoa-protozoa-p-i-rr-fig-12diphasic-rhizopods-a-b-c-heliozoa-like-and-flagellated-stages-of-dimorpha-jnutans-after-blochman-d-e-f-nagleria-gruberi-amoeboid-and-flagellated-stages-e-origin-of-blepharoplast-bl-from-endosome-r-rhizoplast-after-c-w-wilson-flagellates-phacus-lomicauda-phacus-jryrum-heferonema-sp-etc-and-in-the-ciliates-miiiria-paramecium-mctopus-sigmoidcs-etc-the-spiral-twist-is-highly-characteristic-fig-14-bilateral-symmetry-is-of-rare-occurrence-among-protozoa-indeed-there-seems-to-be-only-one-rea-image234605020.htmlRMRHK52M–. The biology of the Protozoa. Protozoa; Protozoa. P-i. rr Fig. 12.—Diphasic rhizopods. A, B, C, heliozoa-like and flagellated stages of Dimorpha jnutans. (After Blochman.) D, E, F, Nagleria gruberi, amoeboid and flagellated stages; E, origin of blepharoplast (bl) from endosome; r, rhizoplast. (After C. W. Wilson.). flagellates Phacus lom/icauda, Phacus jryrum, Heferonema sp,, etc., and in the ciliates M(iiiria, Paramecium, Mctopus sigmoidcs, etc., the spiral twist is highly characteristic (Fig. 14), Bilateral symmetry is of rare occurrence among Protozoa; indeed there seems to be only one rea
. The biology of the protozoa. Protozoa; Protozoa. *i—m Fig. 17 Fig. 18 Fig. 17.—A bilaterally symmetrical flagellate, Giardia muris Grassi. AX, axostyle; B, blepharoplast; BB, basal body; C, centriole; E, endosome; N, nucleus; PL, parabasal body; RH, rhizoplast. (After Kofoid and Swezy.) Fig. 18.—A bilaterally symmetrical ciliate from Uroleptus mobilis. A double individual formed by fusion of two individuals after conjugating. With two mouths and adoral zones (a. z.); two sets of cirri (/); and two sets of macronuclei (M) and micronuclei (m). For structure of single individual see Frontispiec Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biology-of-the-protozoa-protozoa-protozoa-im-fig-17-fig-18-fig-17a-bilaterally-symmetrical-flagellate-giardia-muris-grassi-ax-axostyle-b-blepharoplast-bb-basal-body-c-centriole-e-endosome-n-nucleus-pl-parabasal-body-rh-rhizoplast-after-kofoid-and-swezy-fig-18a-bilaterally-symmetrical-ciliate-from-uroleptus-mobilis-a-double-individual-formed-by-fusion-of-two-individuals-after-conjugating-with-two-mouths-and-adoral-zones-a-z-two-sets-of-cirri-and-two-sets-of-macronuclei-m-and-micronuclei-m-for-structure-of-single-individual-see-frontispiec-image234604718.htmlRMRHK4KX–. The biology of the protozoa. Protozoa; Protozoa. *i—m Fig. 17 Fig. 18 Fig. 17.—A bilaterally symmetrical flagellate, Giardia muris Grassi. AX, axostyle; B, blepharoplast; BB, basal body; C, centriole; E, endosome; N, nucleus; PL, parabasal body; RH, rhizoplast. (After Kofoid and Swezy.) Fig. 18.—A bilaterally symmetrical ciliate from Uroleptus mobilis. A double individual formed by fusion of two individuals after conjugating. With two mouths and adoral zones (a. z.); two sets of cirri (/); and two sets of macronuclei (M) and micronuclei (m). For structure of single individual see Frontispiec
. Bulletin. Natural history; Natuurlijke historie. DISTRIBUTION BY HABITAT 77 Genus CORTICIUM Schmidt Corticium tetralophum n. sp, (Text-fig. 15) HoLOTYPE. YPM 5047. Maiden Cay, Aug. 12, 1961. Habitat. The single specimen was collected at Maiden Cay. Shape. A small incrustation with a maximum thickness of 2.5 mm. Color. The sponge was a dull yellow in life and is a grayish-beige in alcohol. Consistency. Compressible. Surface. The thin detachable ectosome contains numerous tetraloph spicules. A few triradiates are also present. No ostia could be found. Endosome. Tetralophs and a few triradiates Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/bulletin-natural-history-natuurlijke-historie-distribution-by-habitat-77-genus-corticium-schmidt-corticium-tetralophum-n-sp-text-fig-15-holotype-ypm-5047-maiden-cay-aug-12-1961-habitat-the-single-specimen-was-collected-at-maiden-cay-shape-a-small-incrustation-with-a-maximum-thickness-of-25-mm-color-the-sponge-was-a-dull-yellow-in-life-and-is-a-grayish-beige-in-alcohol-consistency-compressible-surface-the-thin-detachable-ectosome-contains-numerous-tetraloph-spicules-a-few-triradiates-are-also-present-no-ostia-could-be-found-endosome-tetralophs-and-a-few-triradiates-image234224213.htmlRMRH1RAD–. Bulletin. Natural history; Natuurlijke historie. DISTRIBUTION BY HABITAT 77 Genus CORTICIUM Schmidt Corticium tetralophum n. sp, (Text-fig. 15) HoLOTYPE. YPM 5047. Maiden Cay, Aug. 12, 1961. Habitat. The single specimen was collected at Maiden Cay. Shape. A small incrustation with a maximum thickness of 2.5 mm. Color. The sponge was a dull yellow in life and is a grayish-beige in alcohol. Consistency. Compressible. Surface. The thin detachable ectosome contains numerous tetraloph spicules. A few triradiates are also present. No ostia could be found. Endosome. Tetralophs and a few triradiates
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. STUDIES IN THE LIFE-HISTORY OF EUGLENA. 343 s.r.. TEXT-FIGURE A. Diagrams showing the origin and development of the motor apparatus in Euglena agilis. A, vegetative stage; B-D, stages in the prophase; E, metaphase; F-H, anaphase; I-J, telophase; K, cells in quiescent period; L, daughter animal reorganized, (bl.) Blepharoplast; b. b. basal body; end., endo- some; ch. m., chromatoid mass left as residue after formation of kinetic elements; «, nucleus; gr., granule which arises from the endosome, divides and gives rise to the k Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biological-bulletin-biology-zoology-biology-marine-biology-studies-in-the-life-history-of-euglena-343-sr-text-figure-a-diagrams-showing-the-origin-and-development-of-the-motor-apparatus-in-euglena-agilis-a-vegetative-stage-b-d-stages-in-the-prophase-e-metaphase-f-h-anaphase-i-j-telophase-k-cells-in-quiescent-period-l-daughter-animal-reorganized-bl-blepharoplast-b-b-basal-body-end-endo-some-ch-m-chromatoid-mass-left-as-residue-after-formation-of-kinetic-elements-nucleus-gr-granule-which-arises-from-the-endosome-divides-and-gives-rise-to-the-k-image234672840.htmlRMRHP7GT–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. STUDIES IN THE LIFE-HISTORY OF EUGLENA. 343 s.r.. TEXT-FIGURE A. Diagrams showing the origin and development of the motor apparatus in Euglena agilis. A, vegetative stage; B-D, stages in the prophase; E, metaphase; F-H, anaphase; I-J, telophase; K, cells in quiescent period; L, daughter animal reorganized, (bl.) Blepharoplast; b. b. basal body; end., endo- some; ch. m., chromatoid mass left as residue after formation of kinetic elements; «, nucleus; gr., granule which arises from the endosome, divides and gives rise to the k
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 402 C. E. GATES. This endosome has either one large, or several smaller, trans- parent, vacuole-like areas. The nuclei of dead parasites are always found in the unhranched portion.. O o C A B FIG. 3. A. Nucleus from trophozoite 1.3 mm. in length. (Camera lucida.) X ca. 335. e., endosome; n.m., nuclear membrane. B. Nucleus from larger trophozoite. (Camera lucida.) X ca. 350. C. Paraglycogen granules. (Camera lucida.) X ca. 350. Live attached parasites have not been studied but in living detached forms two series of movements Stock Photohttps://www.alamy.com/licenses-and-pricing/?v=1https://www.alamy.com/the-biological-bulletin-biology-zoology-biology-marine-biology-402-c-e-gates-this-endosome-has-either-one-large-or-several-smaller-trans-parent-vacuole-like-areas-the-nuclei-of-dead-parasites-are-always-found-in-the-unhranched-portion-o-o-c-a-b-fig-3-a-nucleus-from-trophozoite-13-mm-in-length-camera-lucida-x-ca-335-e-endosome-nm-nuclear-membrane-b-nucleus-from-larger-trophozoite-camera-lucida-x-ca-350-c-paraglycogen-granules-camera-lucida-x-ca-350-live-attached-parasites-have-not-been-studied-but-in-living-detached-forms-two-series-of-movements-image234672156.htmlRMRHP6MC–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 402 C. E. GATES. This endosome has either one large, or several smaller, trans- parent, vacuole-like areas. The nuclei of dead parasites are always found in the unhranched portion.. O o C A B FIG. 3. A. Nucleus from trophozoite 1.3 mm. in length. (Camera lucida.) X ca. 335. e., endosome; n.m., nuclear membrane. B. Nucleus from larger trophozoite. (Camera lucida.) X ca. 350. C. Paraglycogen granules. (Camera lucida.) X ca. 350. Live attached parasites have not been studied but in living detached forms two series of movements
Search Results for Endosome Stock Photos and Images (72)
Page 1 of 1