DR LINDA STANNARD, UCT / SCIENCE PHOTO LIBRARY DR LINDA STANNARD, UCT / SCIENCE PHOTO LIBRARY
Mycobacterium bovis. Coloured transmission electron micrograph (TEM) of a group of M. bovis bacteria. It is a Gram-positive, aerobic, non- motile bacterium. M. bovis is a variant of M. tuberculosis, which causes tuberculosis in cattle and humans. A strain of this bacterium, known as BCG (bacillus of Calmette-Guerin), is used as a live, attenuated vaccine in humans.
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