Saturday, July 9, 2011

Escherichia coli

Escherichia coli  is a Gram-negative, rod-shaped bacteria that are commonly found in the lower intestines of warm-blooded (warm-blooded). Most strains of E. coli are harmless, but some serotypes can cause serious food poisoning in humans, and sometimes responsible for the revocation produktsii.Bezvrednyh strains are part of the normal intestinal flora and can use its host by producing vitamin K2, and benefit by preventing the establishment of intestinal pathogenic bacteria.
E.coli cells are an important part of the feces, and fecal-oral transmission is the main way by which pathogenic strains cause disease bakterii.Kletki able to survive outside the body for a limited time, which makes them an ideal indicator organism to test environmental samples for fecal contamination . The bacteria can be grown easily and inexpensively in the lab, and have been intensively studied for over 60 years. E. coli is the most studied prokaryotic organisms, and models of important species in the field of biotechnology and microbiology, where he was the host for most work, served with a recombinant DNA

E. coli has been developed German bacteriologist Theodor Escherich peadiatrician and discovered in 1885 and is now classified as part of the Enterobacteriaceae family of gamma-proteobacteria