Parents of a kidney transplant candidate were tested for apotential compatible kidney because the candidate demonstrated HLAantibodies. The patient's HLA antigens were typed as A1, A2, B27,B50, DR17, and DR11. Antibodies identified were specific for A3,B18, and DR7 antigens.
1.  If the mother's HLA typingis A1,A3, B35, B27, DR4, and DR11, and the father's typing is A2, A24,B50, B44, DR11, and DR17, what antigens did the fathercontribute?
2. List the probable HLA types of the candidate's threesiblings. Select the kidney or kidneys with the best match.
