title: Identification of tissue-invading bacteria in human periodontal disease.
mesh_terms: D000188:Actinobacillus / Q000302:isolation & purification; D000293:Adolescent; D001419:Bacteria / Q000302:isolation & purification*; D005260:Female; D006801:Humans; D007124:Immunoenzyme Techniques; D008854:Microscopy, Electron; D008855:Microscopy, Electron, Scanning; D010518:Periodontitis / Q000382:microbiology*