Which is not affected in Rh isoimmunization?: (A) Anti C, (B) Anti E, (C) Anti-Lewis, (D) Anti D
Answer is C. Anti Lewis REF: Fernando arias 3' e p. 359-360 The Lewis antigen doesn't cause erythroblastosis fetalis and differs from all other antigens that they are not synthesized in RBC membrane, but absorbed into it.