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SEM of activated platelets in human blood

SEM of activated platelets in human blood

P256/0028

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30.5 MB (1.9 MB compressed)

3602 x 2959 pixels

30.5 x 25.1 cm ⏐ 12.0 x 9.9 in (300dpi)

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Credit

PROFESSOR P.M. MOTTA, G. MACCHIARELLI, S.A NOTTOLA / SCIENCE PHOTO LIBRARY PROFESSOR P.M. MOTTA, G. MACCHIARELLI, S.A NOTTOLA / SCIENCE PHOTO LIBRARY

Caption

Activated platelets. Coloured Scanning Electron Micrograph (SEM) of activated platelets in human blood. Platelets or thrombocytes (yellow) are small non-nucleated cells found in large numbers in the blood. When inactive they are round or oval discs; activated they have dendritic processes, or pseudopodia, and are star-shaped (as seen here). When activated they clump together and are involved in blood clotting. Leucocytes or white blood cells (light blue) play a role in the immune response of the body. At top is a red blood cell. The endothelial wall of a blood vessel is dark blue. Magnification: x4,510 at 6x7cm size. Magnification: x5,700 at 4x5 inch size.

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