BACTERIA INDUCED MORPHOLOGIC CHANGES.
D001419:Bacteria; D002432:Cecum; D005856:Germ-Free Life; D007422:Intestines / Q000382:microbiology*; D007778:Lactobacillus; D008198:Lymph Nodes; D051381:Rats; D012106:Research; D013290:Streptococcal Infections
CECUM; EXPERIMENTAL LAB STUDY; GERM-FREE LIFE; INTESTINAL MICROORGANISMS; LACTOBACILLUS; LYMPH NODES; RATS; STREPTOCOCCAL INFECTIONS