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Activated platelet, SEM

Activated platelet, SEM

C048/8748

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49.7 MB (6.6 MB compressed)

4695 x 3702 pixels

39.6 x 31.2 cm ⏐ 15.6 x 12.3 in (300dpi)

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Credit

LENNART NILSSON / BOEHRINGER INGELHEIM / TT / SCIENCE PHOTO LIBRARY LENNART NILSSON / BOEHRINGER INGELHEIM / TT / SCIENCE PHOTO LIBRARY

Caption

Coloured scanning electron micrograph (SEM) of an activated platelet (white). Platelets are fragments of white blood cells that under normal circumstances are small and biconcave in form. However, if there is a break in the surface of a blood vessel the platelets come into contact with molecules they are not used to and become activated. They become amorphous in form, with long projections (pseudopodia) that help them adhere to other cells and each other, forming a clot.

Release details

Model release not required. Property release not required.

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