Platelets in a blood clot. Coloured scanning electron micrograph (SEM) of platelet cells (thrombocytes) in a blood clot. They are oval shaped,but when they meet damaged blood vessels they become activated - releasing chemical factors and turning into spiky spheres. The chemical factors cause fibrinogen to come out of solution as fibrin fibres,catching platelets and other blood cells and eventually forming a solid clot. Magnification: x4600 when printed 10 centimetres wide | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Gschmeissner, Steve |
Bildgröße: | 3500 px × 2578 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |