title: Transcobalamin II deficiency in infancy and the diagnostic value of serum B12 binders.
mesh_terms: D006801:Humans; D007223:Infant; D014155:Transcobalamins / Q000172:deficiency*; D014805:Vitamin B 12 / Q000097:blood*
chemical_list: D014155:Transcobalamins; D014805:Vitamin B 12