Number of bacterial species in colon

Range >400 species
Organism Mammals
Reference Macpherson AJ, Harris NL. Interactions between commensal intestinal bacteria and the immune system. Nat Rev Immunol. 2004 Jun4(6):478-85. DOI: 10.1038/nri1373 p.478 box 1 'Intestinal microorganisms' link PubMed ID15173836
Comments P.478 box 1 link : "The distal portion of the small intestine, the ileum, is a transition zone with higher bacterial densities (10^8 per gram) and species diversity, but the most dense colonization is in the colon (10^10–10^12 per gram), which hosts more than 400 bacterial species."
Entered by Uri M
ID 112893