23.9 MB (2.7 MB compressed)
3192 x 2615 pixels
26.9 x 22.1 cm ⏐ 10.6 x 8.7 in (300dpi)
DR GOPAL MURTI / SCIENCE PHOTO LIBRARY DR GOPAL MURTI / SCIENCE PHOTO LIBRARY
Macrophage eating Clostridium bacterium. Coloured transmission electron micrograph (TEM) of a section through a Clostridium sp. bacterium (blue circle) which has been engulfed by a macrophage (brown). These bacteria are commonly found in wound infections, and are a major cause of gas gangrene (tissue death through infection). The macrophage has extended its body towards and around the bacterium, capturing and engulfing it in a process called phagocytosis. Macrophages are part of the immune system which keeps the body free of invading organisms. This bacterium will be chemically destroyed by enzymes. Magnification: x7,400 at 6x7cm size.
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