This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Microbiology
A woman with infeility receives an ovary transplant from her sister who is an identical twin. What type of graft it is ? 
Select and explain. 
A. Xenograft, B. Autograft, C. Allograft, D. Isograft
D: Isograft
Answer: D: Isograft 
Explanation: Ans. is 'd' i.e., Isograft . A tissue graft is a medical procedure in which tissue from a donor is used to replace missing or damaged tissue on a patient ( recipient).