title: Why the high background? [75Se] L-selenomethionine--a longterm culprit.
mesh_terms: D001417:Background Radiation; D001822:Body Burden; D006207:Half-Life; D006801:Humans; D010179:Pancreas / Q000000981:diagnostic imaging; D011829:Radiation Dosage; D011839:Radiation, Ionizing; D011877:Radionuclide Imaging; D012588:Scintillation Counting; D012643:Selenium; D012645:Selenomethionine; D014018:Tissue Distribution
chemical_list: D012645:Selenomethionine; D012643:Selenium