26.4 MB (1.6 MB compressed)
3652 x 2529 pixels
31.0 x 21.3 cm ⏐ 12.2 x 8.4 in (300dpi)
BSIP AMAR / SCIENCE PHOTO LIBRARY BSIP AMAR / SCIENCE PHOTO LIBRARY
Activated platelet. Coloured Scanning Electron Micrograph (SEM) of an activated platelet (blue) among red blood cells. Platelets, or thrombocytes, are small non-nucleated cells found in large numbers in the blood. When inactive they are round or oval discs. When activated they grow finger- like processes called pseudopodia (as seen here) and clump together to form blood clots. Magnification: x6000 at 35mm size.
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