Colibacteria are relatively harmless microorganisms, which are present in the intestines of humans and animals in large numbers. They play an important role in food digestion.
Faecal colibacteria (enterobacteriaceae) are a subgroup of colibacteria. Escherichia coli (E. coli) is the most comminly known species of faecal colibacterium.
Faecal colibacteria are different from other species of colibacteria, because they grow under conditions of increased temperature, and because they are only present in human and animal faeces.
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