Escherichia coli (E. coli)

Escherichia coli, commonly known as E. coli, is a gram-negative, facultatively anaerobic, rod-shaped bacterium that is naturally found in the lower intestines of warm-blooded organisms. It is not a commercial product manufactured by a company, but rather a biological species first identified in 1885 by the German-Austrian pediatrician Theodor Escherich.

In scientific and industrial contexts, specific strains of E. coli are cultured in laboratories globally for medical research, biotechnology, and the production of insulin and other proteins. While it exists naturally in the environment and across all continents, laboratory-grade cultures are maintained by various biological resource centers and private life-sciences firms worldwide. It remains a fundamental organism in the study of microbiology and genetics.