title: A DEAE cellulose column method using predosed 57Co cyanocobalamin and pooled serum for measuring vitamin B12 in serum.
mesh_terms: D002848:Chromatography, DEAE-Cellulose; D003037:Cobalt Radioisotopes; D011485:Protein Binding; D014805:Vitamin B 12 / Q000097:blood*
chemical_list: D003037:Cobalt Radioisotopes; D014805:Vitamin B 12