This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
[{'content': 'Site of transplantation in Islet cell transplant for Diabetes mellitus is \nSelect and explain. \nA. Skin, B. Injected into the poal vein, C. Liver, D. Pelvis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: The islets are then purified from the dispersed tissue by density-gradient centrifugation and can be delivered into the recepient liver (the preferred site for transplantation) by injection into the poal vein Ref: Bailey and love 27th edition Pgno :1552', 'role': 'assistant'}]