title: Urea content of gingival crevicular fluid and its relation to periodontal diseases in humans.
mesh_terms: D005881:Gingiva / Q000378:metabolism*; D005883:Gingival Crevicular Fluid / Q000032:analysis; D006801:Humans; D006863:Hydrogen-Ion Concentration; D010510:Periodontal Diseases / Q000378:metabolism*; D012463:Saliva / Q000032:analysis; D014508:Urea / Q000032:analysis* / Q000097:blood
chemical_list: D014508:Urea