title: A controlled study of the safety and efficacy of acetylcysteine-isoproterenol combination.
mesh_terms: D000111:Acetylcysteine / Q000008:administration & dosage*; D000368:Aged; D001991:Bronchitis / Q000188:drug therapy*; D002986:Clinical Trials as Topic; D006801:Humans; D007545:Isoproterenol / Q000008:administration & dosage*; D008297:Male; D008875:Middle Aged; D010919:Placebos; D011175:Positive-Pressure Respiration; D013183:Sputum / Q000032:analysis; D014783:Viscosity
chemical_list: D010919:Placebos; D007545:Isoproterenol; D000111:Acetylcysteine