E. coli bacteria, SEM

Credit: DAVID SCHARF/SCIENCE PHOTO LIBRARY

Caption: E. coli bacteria. Coloured scanning electron micrograph (SEM) of a colony of Escherichia coli bacteria, a cause of food poisoning. These Gram- negative bacteria are present in the intestinal tract of humans and other animals. They are usually harmless, but cross-contamination through food and other routes can cause diarrhoea and gastroenteritis in humans. Magnification: x6,750 at 6x6cm size. x10,500 at 44".

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Keywords: bacillus, bacteria, bacterial, bacteriology, bacterium, cell, cells, colony, coloured, diarrhoea, e. coli, escherichia coli, food poisoning, gastroenteritis, gram-negative, infectious, intestinal, many, micro-organism, micro-organisms, microbe, microbes, microbiology, multiple, pathogen, pathogenic, pathogens, rod-shaped, scanning electron micrograph, sem

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