Coloured SEM of an activated macrophage

Coloured SEM of an activated macrophage

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Credit: PROFESSORS P.M. MOTTA & S. CORRER/SCIENCE PHOTO LIBRARY

Caption: Active macrophage. Coloured scanning electron micrograph of an activated macrophage (yellow), on the surface of a cerebral ventricle. Macrophages form part of the reticulo-endothelial system, also known as mononuclear phagocyte system, which includes cells and tissues with marked phagocytic properties. Macrophages are capable of engulfing and digesting cellular debris, aged red cells, and once activated by antigenic stimuli, bacteria and foreign bodies. Their shape is characterised by thin projections (filopodia) which are used by the macrophages for support and movement. Magnification: x3100 at 6x7cm size.

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Keywords: active, anatomy, brain, brain ventricle, cells, defence, filopodia, human body, immune, immunology, macrophage, macrophage arms, mononuclear phagocyte system, phagocyte cell, reticulo endothelial system, system, ventricle

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