title: Radionuclide evaluation of lower gastrointestinal hemorrhage: a review.
mesh_terms: D003108:Colonic Diseases / Q000000981:diagnostic imaging*; D004912:Erythrocytes; D006471:Gastrointestinal Hemorrhage / Q000000981:diagnostic imaging*; D006801:Humans; D011877:Radionuclide Imaging; D012002:Rectal Diseases / Q000000981:diagnostic imaging*; D013667:Technetium; D013671:Technetium Tc 99m Sulfur Colloid
chemical_list: D013671:Technetium Tc 99m Sulfur Colloid; D013667:Technetium