title: In vitro evaluation of the mucolytic action of urea.
mesh_terms: D006801:Humans; D066298:In Vitro Techniques; D009093:Mucus / Q000187:drug effects*; D013183:Sputum; D014508:Urea / Q000494:pharmacology*; D014783:Viscosity
chemical_list: D014508:Urea