London, United Kingdom
E Coli Bacteria Sem
Photograph - Photograph
E. coli bacteria, coloured scanning electron micrograph (SEM). Escherichia coli are Gram-negative rod-shaped bacteria that are part of the normal flora of the human gut. Some strains produce a toxin that causes severe diarrhoea and can be fatal, especially in the very young or elderly. Magnification x7,750 when printed at 10 centimetres wide.
May 5th, 2013
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