title: The ideal radiotracer in gastrointestinal bleeding detection.
mesh_terms: D004912:Erythrocytes; D005069:Evaluation Studies as Topic; D006471:Gastrointestinal Hemorrhage / Q000000981:diagnostic imaging*; D006801:Humans; D011877:Radionuclide Imaging; D013670:Sodium Pertechnetate Tc 99m; D013455:Sulfur; D013667:Technetium; D013671:Technetium Tc 99m Sulfur Colloid
chemical_list: D013671:Technetium Tc 99m Sulfur Colloid; D013455:Sulfur; D013667:Technetium; D013670:Sodium Pertechnetate Tc 99m