Platelets (thrombocytes), coloured scanning electron micrograph (SEM). are made in the bone marrow. In their non-activated state they are disc shaped but when a blood vessel becomes damaged, it will send out a signal to thrombocytes who respond by travelling to the damaged area and transforming into their activated form. They change shape and form long tentacle-like protrusions. Fibrin is a protein formed from fibrinogen during the clotting of blood. The thrombocytes clump together and together with the polymerized fibrin, form a clot over the wound. Magnification: x10500 when printed at 10cm wide. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Anne Weston, EM STP, the Francis Crick Institute |
Bildgröße: | 4650 px × 3396 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
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