Synonyms : Cobalamin-Binding Proteins, Cobalophilin, Haptocorrin, Holo-Transcobalamin II, R-Binder, Transcobalamin (I), Transcobalamin I, Transcobalamin III, Vitamin B 12 Binder, Vitamin B12-Binding Proteins, Cobalamin Binding Proteins, Holo Transcobalamin II, R Binder