Cultivated strains (e.g. E. coli K-12) are well-adapted to the laboratory environment, and, unlike wild type strains, have lost their ability to thrive in the intestine.
As cepas cultivadas (por exemplo E. coli K12) están ben adaptadas ao ambiente do laboratorio, e, a diferenza das cepas de tipo salvaxe, perderon a súa capacidade de prosperar no intestino.