Histoplasma capsulatum fungus, light micrograph

Histoplasma capsulatum fungus, light micrograph Stock Photo

RMID:2WJ96R6

Image details

Contributor:

Science Photo Library / Alamy Stock Photo

Image ID:

2WJ96R6

File size:

25.1 MB (541.8 KB Compressed download)

Releases:

Model - no | Property - noDo I need a release?

Dimensions:

3550 x 2470 px | 30.1 x 20.9 cm | 11.8 x 8.2 inches | 300dpi

Date taken:

8 February 2024

Photographer:

CDC, Dr. Libero Ajello/SCIENCE PHOTO LIBRARY

More information:

Light micrograph showing Histoplasma capsulatum fungus in its mycelial form. Depending on ambient temperature, Histoplasma can form a unicellular yeast, or a multicellular mycelium as seen here. Two macroconidia, a form of asexual spore, are visible (circles) as are hair-like hyphae (fungal filaments). This fungus is mostly found in soil, especially where bat and bird droppings are present. The spores can causes the disease histoplasmosis when inhaled. In most cases, people are not affected when they inhale these spores, but in some cases develop a fever, cough, and fatigue which typically self-resolve. In rare cases, particularly when patients are immunosuppressed, severe histoplasmosis can develop, and potentially affect almost any part of the body. This can lead to respiratory or bone marrow failure which can be fatal. Antifungal medication is the typical treatment course when necessary.

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RMK1FCPY–Yeast forms of Histoplasma capsulatum in tissue. Histopathology of histoplasmosis showing yeast forms of Histoplasma capsulatum . This fungus shows thermal dimorphism: mold form at 25{degrees}C and yeast form at 37{degrees}C. Image courtesy CDC. 1982.

RMKR0X7B–This micrograph depicts the histopathologic changes of the spleen due to Histoplasma duboisii, 1965. Histoplasmosis, due to Histoplasma duboisii, is a mycotic infection primarily involving cutaneous, liver, lung, lymphatic, subcutaneous, and bony tissues. Image courtesy CDC/Dr. Martin Hicklin.

RMK1FCPR–Asexual spores (conidia): tuberculate macroconidia of Histoplasma capsulatum . Microconidia are also present. Image courtesy CDC. 1982.

RMKR0X42–This micrograph depicts the histopathologic changes in the spleen due to H. duboisii, using PAS staining technique, 1965. Histoplasmosis due to Histoplasma duboisii is a mycotic infection primarily involving cutaneous, liver, lung, lymphatic, subcutaneous, and bony tissues. Image courtesy CDC/Dr. Martin Hicklin.

RMKR0X99–This micrograph depicts histopathologic changes associated with Histoplasmosis of the lung using methenamine silver stain, 1965. Here the yeast forms of H. capsulatum are shown. This organism which grows in soil or material contaminated with bat or bird droppings, becomes airborne when contaminated soil is disturbed, and breathing the spores causes infection. Image courtesy CDC/Dr. Martin Hicklin.

RMKR0XGW–This micrograph depicts histopathologic changes associated with Histoplasmosis of the lung using methenamine silver stain, 1964. Here the yeast forms of H. capsulatum are shown. This organism which grows in soil or material contaminated with bat or bird droppings, becomes airborne when contaminated soil is disturbed, and breathing the spores causes infection. Image courtesy CDC/Dr. Martin Hicklin.

RMKR0XCP–This partially calcified fibrocaseous nodule depicts the histopathologic changes associated with Histoplasmosis of the lung, 1973. Histoplasma capsulatum grows in soil, and material contaminated with bat or bird droppings. Spores become airborne when contaminated soil is disturbed, and breathing the spores causes infection. The disease is not transmitted from person to person. Image courtesy CDC.