This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Immunology, Subject name: Microbiology
A woman receives a kidney transplant from her sister who is an identical twin. What type of graft is it 
Select and explain. 
A. Allograft, B. Autograft, C. Xenograft, D. Isograft
D: Isograft
Answer: D: Isograft 
Explanation: An autograft is a graft of tissue from one point to another of the same individual's body. An Isograft is a graft of tissue between two individuals who are genetically identical (i.e. monozygotic twins). Allograft is the transplantation of tissues, to a recipient from a genetically non-identical donor of the same species. Ref : Ananthanarayana textbook of Microbiology 9th edition Pgno : 183