title: Free and intrinsic factor bound radioactive cyanocobalamin. Simultaneous administration to assess the significance of low serum vitamin B 12 levels.
mesh_terms: D000368:Aged; D000752:Anemia, Pernicious / Q000175:diagnosis; D002986:Clinical Trials as Topic; D006801:Humans; D007437:Intrinsic Factor; D008286:Malabsorption Syndromes / Q000175:diagnosis; D008875:Middle Aged; D011868:Radioisotopes; D012546:Schilling Test; D013051:Spectrometry, Gamma; D013997:Time Factors; D014805:Vitamin B 12 / Q000097:blood; D014806:Vitamin B 12 Deficiency / Q000175:diagnosis*
chemical_list: D011868:Radioisotopes; D007437:Intrinsic Factor; D014805:Vitamin B 12