39.4 MB (4.6 MB compressed)
4091 x 3368 pixels
34.5 x 28.4 cm ⏐ 13.6 x 11.2 in (300dpi)
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
False-colour scanning electron micrograph (SEM) of a blood clot. Red blood cells have been trapped by a web of thin yellow-white strands of fibrin. Fibrin is an insoluble protein and represents a mutation of a soluble protein called fibrinogen normally present in blood. Blood clots may occur on the surface of skin in case of injuries or inside blood vessels, where they are known as thrombi. In the later case they may lead to heart attacks. Magnification: x1830 at 6x7cm size.
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