In vitro study of mucolytic action of urea on sputum.
D006801:Humans; D009093:Mucus / Q000187:drug effects*; D012141:Respiratory Tract Infections / Q000188:drug therapy; D013183:Sputum; D014508:Urea / Q000494:pharmacology*; D014783:Viscosity
D014508:Urea