Coloured SEM of phagocytic macrophages

Coloured SEM of phagocytic macrophages

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Credit: DAVID SCHARF/SCIENCE PHOTO LIBRARY

Caption: Macrophages. Coloured Scanning Electron Micrograph (SEM) of two macrophages, part of the body's immune response system. These are solitary cells which engulf and devour (by a process known as phagocytosis) invading microorganisms throughout the body. The projections on the surface of each cell help the macrophage to fasten onto its prey. Macrophages are a type of white blood cell which are found outside the bloodstream, mainly in connective tissue. If an infection occurs, by bacteria entering a wound for example, macrophages migrate to the site of infection and ingest the bacteria. Magnification: x1,525 at 6x7cm size. Magnification: x2,440 at 4x5 inch size.

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Keywords: anatomy, blood cell, body, cells, defence, haematology, hematology, histology, human biology, human body, images, immune, immunology, leucocyte, leukocyte, macrophage, magnified image, microscopic photos, phagocyte, phagocyte cell, phagocytic, scanning electron micrograph, sem, subjects, system, white, white blood cell

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