Mast cell. Coloured scanning electron micrograph (SEM) of a human mast cell. This is a leucocyte (white blood cell) that contains the chemical mediators histamine,serotonin and heparin. A mast cell is part of the immune system,and releases its contents during a localized inflammatory immune response to invading pathogens and during an allergic reaction. Histamine and serotonin cause the symptoms of allergies. Heparin is an anticoagulant which prevents abnormal clotting. Magnification unknown | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Science Source |
Bildgröße: | 6464 px × 4406 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
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