title: Double-contrast examination of the colon with carbon dioxide: the use of effervescent powder.
mesh_terms: D002245:Carbon Dioxide; D003106:Colon / Q000000981:diagnostic imaging*; D004733:Enema / Q000379:methods; D006801:Humans; D011208:Powders; D011859:Radiography
chemical_list: D011208:Powders; D002245:Carbon Dioxide