title: Evidence that some patients with pernicious anemia are not recognized by radiodilution assay for cobalamin in serum.
mesh_terms: D000752:Anemia, Pernicious / Q000097:blood / Q000175:diagnosis*; D001681:Biological Assay; D006801:Humans; D011865:Radioisotope Dilution Technique / Q000592:standards*; D014805:Vitamin B 12 / Q000097:blood*
chemical_list: D014805:Vitamin B 12