title: Biochemical methods and experimental models for studying the intestinal flora.
mesh_terms: D001419:Bacteria / Q000201:enzymology; D003110:Colonic Neoplasms / Q000209:etiology; D004764:Enterohepatic Circulation; D004967:Estrogens / Q000097:blood; D006801:Humans; D007422:Intestines / Q000382:microbiology*; D009374:Neoplasms, Experimental / Q000209:etiology
chemical_list: D004967:Estrogens