Coloured SEM of macrophages attacking bacteria

Coloured SEM of macrophages attacking bacteria

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Credit: DR GOPAL MURTI/SCIENCE PHOTO LIBRARY

Caption: Phagocytosis of Clostridium bacteria. Coloured scanning electron micrograph (SEM) of macrophages attacking Clostridium sp. bacteria. The macrophages (rough appearance, yellow) are extending microvilli (cytoplasmic projections) towards the bacteria (rod-shaped, blue) to engulf them. This process is known as phagocytosis. These bacteria are commonly found in wound infections and are a major cause of gas gangrene (tissue death through infection). Macrophages are part of the immune system which keeps the body free of invading organisms. Once engulfed, these bacteria will be chemically destroyed by enzymes. Magnification: x950 at 6x7cm size. x3,300 at 8x10 inch size.

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Keywords: anatomy, bacteria, bacterium, bacterium attacked, cells, clostridium sp., defence, eating clostridium, gangrene, human body, immune, immune response, immunology, macrophage, macrophages, macrophages attack, phagocytosis, system

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