since transcobalamin ii is the plasma binder of vitamin b12 ( cobalamin ) that mediates delivery of cobalamin to tissues , we measured circulating levels of transcobalamin ii after intravenous injection unlabeled cyanocobalamin in 12 control subjects and , because the liver is a major source of transcobalamin ii , in eight patients with decompensated cirrhosis .
C0023884
liver
C0023890
cirrhosis