title: The relationship of complement cleavage in gingival fluid to periodontal diseases.
mesh_terms: D000328:Adult; D002908:Chronic Disease; D003167:Complement Activation; D003176:Complement C3 / Q000032:analysis; D003181:Complement C4 / Q000032:analysis; D003165:Complement System Proteins / Q000032:analysis*; D003430:Cross-Sectional Studies; D005883:Gingival Crevicular Fluid / Q000276:immunology*; D005891:Gingivitis / Q000276:immunology*; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D010518:Periodontitis / Q000276:immunology*
chemical_list: D003176:Complement C3; D003181:Complement C4; D003165:Complement System Proteins