This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Anatomy
[{'content': 'Function of hepatic kupffer cells is \nSelect and explain. \nA. Formation of sinusoids, B. Vitamin A storage, C. Increase blood perfusion, D. Phagocytosis', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Kupffer cells Kupffer cells, derived from the macrophage - monocyte system Are irregular stellate - shaped cells that also line the sinusoids, insinuating between endothelial cells Phagocytic, play a major role in the trapping of foreign substances and initiating an inflammatory response MHC-II antigens are expressed on kupffer cells but do not confer efficient antigen presentation compared with macrophages elsewhere in the body Ref: Sabiston 20th edition Pgno :1430', 'role': 'assistant'}]