KEVIN MACKENZIE / UNIVERSITY OF ABERDEEN / SCIENCE PHOTO LIBRARY KEVIN MACKENZIE / UNIVERSITY OF ABERDEEN / SCIENCE PHOTO LIBRARY
Macrophages infected with Candida yeast spores, coloured scanning electron micrograph (SEM). These two macrophage cells are shown four hours after infection with Candida yeast spores. The projections extending from the macrophages are fungal hyphae growing within the cells. This will eventually kill the cells by causing them to burst. Macrophages are white blood cells of the immune system. Their role is to engulf and destroy foreign material. They are found in all tissues of the body. Overgrowth of yeasts can result in fungal infections such as thrush (candidiasis). Imaged using a secondary electron (SE) detector. Magnification: x1540 when printed at 10 centimetres across.
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