Blood clot

Blood clot

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Credit: D. PHILLIPS/SCIENCE PHOTO LIBRARY

Caption: False-colour scanning electron micrograph (SEM) of a blood clot. Known also as a thrombus. Red blood cells (coloured orange) have been trapped behind a web of thin green strands. These threads are composed of a substance called fibrin, formed from an insoluble protein. Fibrin is produced when a blood vessel is injured. Substances released into the blood cause these strands to seal the site from excessive blood loss and create a blood clot, occuring either on the skin surface, in cases of injuries, or inside blood vessels where they are known as a coagulation thrombus, which may lead to a heart attack if it blocks a heart artery. Magnification: x900 at 35mm, x1800 at 6x7cm size.

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Keywords: anatomy, blood, blood clot, clotting, coagulation, coagulation thrombus, erythrocyte, fibrin, haematology, hematology, human body, images, in blood clot, in clot, injury, magnified image, mechanism, medical, medicine, microscopic photos, process, red blood cell, scanning electron micrograph, sem, subjects, thrombus

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