Radioisotopic assay of serum vitamin B 12 with the use of DEAE cellulose.
D002482:Cellulose; D003036:Cobalt Isotopes; D006801:Humans; D014805:Vitamin B 12 / Q000097:blood*
D003036:Cobalt Isotopes; D002482:Cellulose; D014805:Vitamin B 12