title: Darkfield microscopy of the flora of subgingival plaque of patients with severe periodontitis and its use in therapeutic assessment.
mesh_terms: D000328:Adult; D001419:Bacteria / Q000302:isolation & purification*; D003773:Dental Plaque / Q000382:microbiology*; D006801:Humans; D008853:Microscopy / Q000379:methods; D008875:Middle Aged; D010518:Periodontitis / Q000175:diagnosis / Q000382:microbiology* / Q000628:therapy; D013144:Spirochaetales / Q000302:isolation & purification