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F/col TEM Unactivated blood platelets

F/col TEM Unactivated blood platelets

P256/0018

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51.8 MB (2.9 MB compressed)

4724 x 3832 pixels

39.9 x 32.5 cm ⏐ 15.7 x 12.8 in (300dpi)

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Credit

CNRI / SCIENCE PHOTO LIBRARY PHOTO LIBRARY CNRI / SCIENCE PHOTO LIBRARY PHOTO LIBRARY

Caption

False-colour transmission electron micrograph of unactivated blood platelets & some red blood cells (bottom left). Platelets (thrombocytes) are small, non-nucleated cells formed in the bone marrow and found in circulating blood. Unactivated platelets are oval in shape and 2-3 micrometres in diameter. Activated platelets have dendritic processes or pseudopodia. Platelets function in 2 ways; they help plug small defects in the walls of small blood vessels and they are involved in clotting and the release of serotonin, a compound which reduces blood flow by constricting the damaged vessels. Magnification: x12,000 at 6x7cm size.

Release details

Model release not required. Property release not required.

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