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: Physiology
[{'content': 'Equivalent to macrophages are ? \nSelect and explain. \nA. Keratinocytes, B. Histiocytes, C. Mast cells, D. Microphages', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Histiocytes Monocyte/Macrophages Mononuclear phagocytes (MP) also known as macrophages or histiocytes are distributed throughout viual all tissues. The macrophage is the dominant cellular player in chronic inflammation. MP arise from monoblast in the marrow, and they are released into the circulation as monocytes. The monocytes then migrate to tissues and become pa of the tissue (fixed) macrophages.", 'role': 'assistant'}]