title: The use of N-acetyl-l-cysteine in double contrast radiography of the colon: a clinical trial.
mesh_terms: D000111:Acetylcysteine; D001466:Barium Sulfate; D003106:Colon / Q000000981:diagnostic imaging*; D004733:Enema; D005100:Expectorants; D006801:Humans; D011859:Radiography
chemical_list: D005100:Expectorants; D001466:Barium Sulfate; D000111:Acetylcysteine