Development of immunological capacity under germfree and conventional conditions.
D000818:Animals; D000831:Animals, Newborn; D000907:Antibodies, Bacterial / Q000096:biosynthesis*; D000942:Antigens, Bacterial / Q000008:administration & dosage / Q000276:immunology; D002465:Cell Movement; D004926:Escherichia coli / Q000254:growth & development; D004927:Escherichia coli Infections / Q000276:immunology; D005856:Germ-Free Life; D007111:Immunity, Cellular; D007413:Intestinal Mucosa / Q000276:immunology / Q000382:microbiology; D007519:Isoantigens / Q000008:administration & dosage / Q000276:immunology; D008214:Lymphocytes / Q000502:physiology; D010581:Peyer's Patches / Q000166:cytology / Q000276:immunology / Q000648:ultrastructure; D051381:Rats; D011919:Rats, Inbred Strains; D012481:Salmonella Infections, Animal / Q000276:immunology; D013552:Swine
D000907:Antibodies, Bacterial; D000942:Antigens, Bacterial; D007519:Isoantigens