title: Spirochaetes in periodontal disease.
mesh_terms: D006801:Humans; D010510:Periodontal Diseases / Q000382:microbiology*; D012329:RNA, Bacterial / Q000032:analysis; D014208:Treponema / Q000145:classification / Q000235:genetics / Q000472:pathogenicity; D014211:Treponemal Infections
chemical_list: D012329:RNA, Bacterial