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: Pathology
[{'content': 'Which cells of the mononuclear phagocyte system are presnt in liver ? \nSelect and explain. \nA. Kupffer cells, B. Merkel cells, C. Gittle cells, D. Berger cells', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Kupffer cells", 'role': 'assistant'}]