Escherichia coli

Escherichia coli is a bacterium that is commonly found in the intestine of warm-blooded organisms (endotherms). Most strains are harmless, but some can cause food poisoning. The harmless strains are part of the normal microbiota of the gut. E. coli can be grown and cultured easily and inexpensively in a laboratory setting, and can reproduced in as little as 20 minutes, all of which make it a popular model organism.