title: Comparison of two radioassay methods for vitamin B 12 .
mesh_terms: D002482:Cellulose; D003036:Cobalt Isotopes; D003911:Dextrans; D005782:Gels; D006801:Humans; D007437:Intrinsic Factor; D008722:Methods; D008832:Microchemistry; D011485:Protein Binding; D014805:Vitamin B 12 / Q000097:blood*
chemical_list: D003036:Cobalt Isotopes; D003911:Dextrans; D005782:Gels; D002482:Cellulose; D007437:Intrinsic Factor; D014805:Vitamin B 12