title: Iron pigmentation of the gut of germ-free and conventionalized guinea pigs.
mesh_terms: D000818:Animals; D002432:Cecum / Q000378:metabolism*; D005856:Germ-Free Life; D006168:Guinea Pigs; D066298:In Vitro Techniques; D007422:Intestines; D007501:Iron / Q000378:metabolism*; D010858:Pigmentation; D013194:Staining and Labeling
chemical_list: D007501:Iron