title: An improved radioisotope dilution assay for serum vitamin B12 using hemoglobin-coated charcoal.
mesh_terms: D000752:Anemia, Pernicious / Q000097:blood / Q000175:diagnosis; D002606:Charcoal; D003036:Cobalt Isotopes; D003486:Cyanides; D005056:Euglena gracilis / Q000378:metabolism; D005494:Folic Acid Deficiency / Q000097:blood / Q000175:diagnosis; D005750:Gastric Juice / Q000201:enzymology; D006454:Hemoglobins; D006801:Humans; D007437:Intrinsic Factor; D011865:Radioisotope Dilution Technique; D014805:Vitamin B 12 / Q000097:blood* / Q000378:metabolism
chemical_list: D003036:Cobalt Isotopes; D003486:Cyanides; D006454:Hemoglobins; D002606:Charcoal; D007437:Intrinsic Factor; D014805:Vitamin B 12