Coloured SEM of blood clot with platelets & fibrin

Coloured SEM of blood clot with platelets & fibrin

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Credit: D. PHILLIPS/SCIENCE PHOTO LIBRARY

Caption: Blood clot. Coloured Scanning Electron Micrograph (SEM) of a blood clot. Spiky blood cells called platelets have become enmeshed in a network of fi- brin fibres (red). Blood clots form when platelets are activated by contact with damaged blood vess- els. The activated cells turn into spiky spheres that clump together and release chemical factors into the blood. These factors activate more plate- lets as well as starting a cascade of chemical reactions that turns the soluble protein fibrino- gen into insoluble protein fibres called fibrin. The fibrin fibres form a dense network that enmeshes blood cells and eventually tightens into a solid clot. Magnification unknown.

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Keywords: activated, anatomy, blood, blood clot, clot, coagulation, fibrin, human body, in blood clot, in clot, platelet, process, sem, thrombus

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