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Red blood cells. Coloured scanning electron micrograph of a group of red blood cells (erythrocytes). They are travelling through a large vessel and ar Image details File size:
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3436 x 2524 px | 29.1 x 21.4 cm | 11.5 x 8.4 inches | 300dpi
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Red blood cells. Coloured scanning electron micrograph of a group of red blood cells (erythrocytes). They are travelling through a large vessel and are just entering a small vessel. During its short life (about four months) a red blood cell covers about 15km every day for a total of 1500km. In a litre of blood there are normally 5000 billion red blood cells. They transport oxygen from the lungs to the tissues where it is necessary for all metabolic processes. The carbon dioxide produced in these processes is returned to the lungs where it is exhaled. Magnification: x870 at 6x7cm size.
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Coloured scanning electon micrograph (SEM) of human erythrocytes (red blood cells) and a platelet aggregate (yellow). Platelets are fragments of white blood cells that under normal circumstances are small and biconcave in form. However, if there is a break in the surface of a blood vessel the platelets come into contact with molecules they are not used to and become activated. They become amorphous in form, with long projections (pseudopodia) that help them adhere to other cells and each other, forming a clot. Magnification: x3000 when printed at 10 centimetres Red blood cells and platelets. Coloured scanning electon micrograph (SEM) of human erythrocytes (red blood cells) and a platelet aggregate (orange). Platelets are fragments of white blood cells that under normal circumstances are small and biconcave in form. However, if there is a break in the surface of a blood vessel the platelets come into contact with molecules they are not used to and become activated. They become amorphous in form, with long projections (pseudopodia) that help them adhere to other cells and each other, forming a clot. Magnification: x3000 when printed at 10 centimetres Stock Photo https://www.alamy.com/image-license-details/?v=1 https://www.alamy.com/stock-photo-red-blood-cells-and-platelets-coloured-scanning-electon-micrograph-102520725.html RF FXP66D – Red blood cells and platelets. Coloured scanning electon micrograph (SEM) of human erythrocytes (red blood cells) and a platelet aggregate (orange). Platelets are fragments of white blood cells that under normal circumstances are small and biconcave in form. However, if there is a break in the surface of a blood vessel the platelets come into contact with molecules they are not used to and become activated. They become amorphous in form, with long projections (pseudopodia) that help them adhere to other cells and each other, forming a clot. Magnification: x3000 when printed at 10 centimetres