BSIP / SCIENCE PHOTO LIBRARY BSIP / SCIENCE PHOTO LIBRARY
E. coli. Coloured scanning electron micrograph (SEM) of Escherichia coli (E. coli) bacteria. These Gram-negative bacilli (rod-shaped) bacteria are normal inhabitants of the human intestine. However, under certain conditions their numbers may increase and cause infections. They can cause diarrhoea and urinary tract infections. Magnification: x6000 at 35mm size.
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