ROBERT BECKER / CUSTOM MEDICAL STOCK PHOTO / SCIENCE PHOTO LIBRARY ROBERT BECKER / CUSTOM MEDICAL STOCK PHOTO / SCIENCE PHOTO LIBRARY
Neutrophils. Coloured Scanning Electron Micrograph (SEM) of two neutrophil white blood cells. Here, on the surface of the cells are long projecting microvilli which may assist mobility of each cell. Neutrophils are the most common type of leucocyte (white cell) in blood, constituting 40-70% of all circulating leucocytes. They are formed in the bone marrow and use the blood as a transport system to reach sites of infection in the tissues. Neutrophils are very mobile and engulf and destroy cell debris and invading micro-organisms by the process of phagocytosis. Dead neutrophils occur in pus. Magnification: x10,000 at 6x7cm size.
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