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White blood cells and platelets

White blood cells and platelets

P248/0205

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52.3 MB (3.2 MB compressed)

4961 x 3687 pixels

41.9 x 31.2 cm ⏐ 16.5 x 12.3 in (300dpi)

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Credit

STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY

Caption

White blood cells & platelets. Coloured scanning electron micrograph (SEM) of a group of white blood cells (leucocytes) and activated platelets in human blood. The larger rounded white blood cells (coloured dark blue) play a role in the body's immune response. At centre and far left are smaller platelets (thrombocytes, lighter blue). Platelets are non-nucleated cells found in large numbers in the blood. When inactive they are round or oval discs; activated they have dendritic processes, or pseudopodia (as seen here), and they may become star-shaped. When activated, platelets clump together and are involved in blood clotting. Magnification: unknown.

Release details

Model release not required. Property release not required.

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