title: A comparison of radioisotopic and bioassay methods of measurement of serum vitamin B 12.
mesh_terms: D000748:Anemia, Macrocytic / Q000097:blood; D000752:Anemia, Pernicious / Q000097:blood; D000818:Animals; D001681:Biological Assay; D001798:Blood Proteins; D003036:Cobalt Isotopes; D005056:Euglena gracilis / Q000378:metabolism; D005069:Evaluation Studies as Topic; D005494:Folic Acid Deficiency / Q000097:blood; D005743:Gastrectomy; D006801:Humans; D007778:Lactobacillus / Q000378:metabolism; D008722:Methods; D011485:Protein Binding; D011865:Radioisotope Dilution Technique; D014805:Vitamin B 12 / Q000097:blood* / Q000378:metabolism
chemical_list: D001798:Blood Proteins; D003036:Cobalt Isotopes; D014805:Vitamin B 12