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Coloured TEM of a section through blood platelets

Coloured TEM of a section through blood platelets

P256/0040

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40.2 MB (4.0 MB compressed)

4341 x 3238 pixels

36.8 x 27.4 cm ⏐ 14.5 x 10.8 in (300dpi)

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Credit

NIBSC / SCIENCE PHOTO LIBRARY NIBSC / SCIENCE PHOTO LIBRARY

Caption

Active platelets. Coloured transmission electron micrograph (TEM) of a section through activated blood platelets. Platelet cells (thrombocytes) are formed in the bone marrow, and circulate in blood in large numbers. In an unactivated state they are round/oval, whereas activated platelets develop pseudopodia or extensions from the cell wall. Platelets contain cytoplasmic organelles such as mitochondria (green), endoplasmic reticulum and granules (dark blue). Platelets function in two ways: they plug defects in the walls of blood vessels, and are involved in clotting. They also release serotonin which constricts blood vessels. Magnification: x17,700 at 6x7cm size.

Release details

Model release not required. Property release not required.

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