title: The barium enema: is it alive?
mesh_terms: D001466:Barium Sulfate; D003108:Colonic Diseases / Q000000981:diagnostic imaging*; D004733:Enema; D006801:Humans; D011859:Radiography; D012002:Rectal Diseases / Q000000981:diagnostic imaging*
chemical_list: D001466:Barium Sulfate