The problem of tannic acid in colon examination.
D001466:Barium Sulfate; D056486:Chemical and Drug Induced Liver Injury / Q000209:etiology*; D003106:Colon; D006801:Humans; D011859:Radiography; D013634:Tannins / Q000009:adverse effects*
D013634:Tannins; D001466:Barium Sulfate