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False-colour SEM early clot formation in

False-colour SEM early clot formation in

P260/0015

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Credit

PROF. P. MOTTA / DEPT. OF ANATOMY / UNIVERSITY "LA SAPIENZA", ROME / SCIENCE PHOTO LIBRARY PROF. P. MOTTA / DEPT. OF ANATOMY / UNIVERSITY "LA SAPIENZA", ROME / SCIENCE PHOTO LIBRARY

Caption

Early stage of blood clot formation: false-colour scanning electron micrograph (SEM) showing an aggregation of red blood cells on the endocardium, the lining of the heart. Clotting is a repair process signalled by the release of thromboplastin from platelets (a type of blood cell) and injured endothelial cells. The formation of a clot, a mesh of blood cells bound by threads of fibrin, is a complex multi-step process. No fibrin is visible at this early stage. Red cells sometimes tend to align into columns (rouleaux formation), due to surface tension effects. Magnification: x210 at 6x7cm size.

Release details

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