50.1 MB (6.0 MB compressed)
3626 x 4834 pixels
30.7 x 40.9 cm ⏐ 12.1 x 16.1 in (300dpi)
SUSUMU NISHINAGA / SCIENCE PHOTO LIBRARY SUSUMU NISHINAGA / SCIENCE PHOTO LIBRARY
Blood clot. Coloured scanning electron micrograph (SEM) of a blood clot from the inner wall of the left ventricle of the heart. Red blood cells (erythrocytes) are trapped within a fibrin protein mesh (cream). The fibrin mesh is formed in response to chemicals secreted by platelets (pink), fragments of white blood cells. Clots are formed in response to cardiovascular disease or injuries to blood vessels. Connective tissue (orange) is seen in the background.
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