This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Transplantation, Subject name: Surgery
[{'content': 'Most impoant HLA for organ transplantation and tissue typing:- \nSelect and explain. \nA. HLA-A, B. HLA-B, C. HLA-C, D. HLA-D', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Most impoant HLA for organ transplantation and tissue typing is HLA-D. HLA matching has a relatively small but definite beneficial effect on renal allograft survival (HLA-DR > HLA-B > HLA- A) HLA MATCHING HLA antigens Are the MC cause of graft rejectionQ Anti-HLA antibodies may cause Hyperacute rejectionQ In the case of liver transplants, HLA matching does not confer an advantageQ', 'role': 'assistant'}]