title: Scintigraphic localization of lower gastrointestinal bleeding.
mesh_terms: D003108:Colonic Diseases / Q000000981:diagnostic imaging*; D004912:Erythrocytes; D006471:Gastrointestinal Hemorrhage / Q000000981:diagnostic imaging*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011877:Radionuclide Imaging; D012007:Rectum; D013667:Technetium
chemical_list: D013667:Technetium