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
If a mother is donating her kidney to her son- This is an example of 
Select and explain. 
A. Isograft, B. Allograft, C. Autograft, D. Xenograft
B: Allograft
Answer: B: Allograft 
Explanation: Ans. (b) AllograftRef: Surgery Sixer 3rd Edition Page 142Types of Graft:* Allograft: An organ or tissue transplanted from one individual to another* Isograft: Organs transplanted between identical twins and are immunologically indistinguishable* Autograft: Organ or tissue transplanted within same individual, e.g. skin graft, bone graft and free flap* Xenograft: A graft performed between different species