[Introduction to immunology: prevention of periodontal diseases].
D001439:Bacteroides / Q000276:immunology; D002206:Capnocytophaga / Q000276:immunology; D006801:Humans; D010510:Periodontal Diseases / Q000276:immunology / Q000382:microbiology / Q000517:prevention & control*; D010514:Periodontal Pocket / Q000382:microbiology