Aging in germ-free mice: life tables and lesions observed at natural death.
D000375:Aging; D000818:Animals; D004032:Diet; D005705:Gallbladder Diseases / Q000209:etiology*; D005856:Germ-Free Life; D007410:Intestinal Diseases / Q000209:etiology*; D007415:Intestinal Obstruction / Q000209:etiology*; D051379:Mice