Cobalamin radioassays.
D003037:Cobalt Radioisotopes; D006801:Humans; D011933:Reagent Kits, Diagnostic / Q000592:standards; D014805:Vitamin B 12 / Q000032:analysis*
D003037:Cobalt Radioisotopes; D011933:Reagent Kits, Diagnostic; D014805:Vitamin B 12