A method for determination of vitamin B 12 in serum by radioassay.
D001681:Biological Assay; D001774:Blood Chemical Analysis / Q000592:standards; D002482:Cellulose; D003036:Cobalt Isotopes; D005055:Euglena; D006801:Humans; D006863:Hydrogen-Ion Concentration; D008722:Methods; D014805:Vitamin B 12 / Q000097:blood*
D003036:Cobalt Isotopes; D002482:Cellulose; D014805:Vitamin B 12