CUSTOM MEDICAL STOCK PHOTO / SCIENCE PHOTO LIBRARY CUSTOM MEDICAL STOCK PHOTO / SCIENCE PHOTO LIBRARY
Cancer cell eaten by macrophage. Coloured Trans- mission Electron Micrograph (TEM) showing a white blood cell which has phagocytosed a cancer cell. The white blood cell, known as a macrophage, is coloured blue. It has engulfed a cancer cell (red); chromosomes of the cancer cell are yellow. Macrophages are scavenger cells of the immune system which play a protective role in the body. They migrate to sites of infection and attack and engulf, through a process known as phagocytosis, tumour cells, bacteria and other foreign bodies. In this way pathogens are neutralised. Magnification: x11,500 at 35mm size.
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