Assay of serum vitamin B12 concentration using Co57-B12 and intrinsic factor.
D001681:Biological Assay; D045728:Corrinoids; D006397:Hematinics; D006801:Humans; D007437:Intrinsic Factor; D014805:Vitamin B 12 / Q000097:blood*; D014803:Vitamin B Complex
D045728:Corrinoids; D006397:Hematinics; D014803:Vitamin B Complex; D007437:Intrinsic Factor; D014805:Vitamin B 12
VITAMIN B 12/blood