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': 'Kidney transplantation is an: \nSelect and explain. \nA. Allograft, B. Isograft, C. Xenograft, D. Synergic graft', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. (a) AllograftRef: Bailey 26th edition, Page 1408* Allograft: an organ or tissue transplanted from one individual to another* Alloantigen: Transplant antigen* Alloantibody: Transplant antibodies', 'role': 'assistant'}]