This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nerve Physiology, Subject name: Physiology
[{'content': 'Phagocytosis in the CNS is done by: \nSelect and explain. \nA. Astrocytes, B. Schwann cells, C. Microglia, D. Oligocytes', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. C. MicrogliaThe reticuloendothelial system (R.E.S) comprises monocyte-derived phagocytic cells that are lymph nodes and several other organs. The reticuloendothelial system comprises monocyte-derived phagocytic cells that are lymph nodes several other organs.', 'role': 'assistant'}]