title: Ammonia and urea content of human incisor tooth plaque.
mesh_terms: D000641:Ammonia / Q000378:metabolism*; D003773:Dental Plaque / Q000378:metabolism*; D006801:Humans; D006863:Hydrogen-Ion Concentration; D007180:Incisor; D013997:Time Factors; D014508:Urea / Q000378:metabolism*
chemical_list: D000641:Ammonia; D014508:Urea