[The etiology of juvenile periodontitis].
D000188:Actinobacillus / Q000276:immunology / Q000472:pathogenicity; D000293:Adolescent; D006801:Humans; D009055:Mouth / Q000382:microbiology; D009504:Neutrophils / Q000276:immunology; D010518:Periodontitis / Q000209:etiology*