STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY
Microglial white blood cell. Coloured scanning electron micrograph (SEM) of a microglial cell. Microglia are phagocytic macrophage white blood cells that are the main form of immune system in the central nervous system (CNS). Magnification: x1600 when printed 10 centimetres wide.
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