title: Histopathogenesis of spontaneous periodontal disease in conventional rats. I. Histometric and histologic study.
mesh_terms: D000818:Animals; D005881:Gingiva / Q000473:pathology; D005891:Gingivitis / Q000209:etiology / Q000473:pathology*; D008297:Male; D010518:Periodontitis / Q000473:pathology*; D010519:Periodontium / Q000473:pathology; D051381:Rats; D013997:Time Factors