This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General physiology, Subject name: Physiology
[{'content': 'Myelination in peripheral nervous system is done by \nSelect and explain. \nA. Astrocytes, B. Oligodendrocyte, C. Ependymal cells, D. Schwann cells', 'role': 'user'}, {'content': 'Answer: D \nExplanation: In PNS myelination is done by schwann cells In CNS myelination is done by oligodendrocytes Ref:Guyton and Hall textbook of medical physiology 12th edition,page number:671,672,673', 'role': 'assistant'}]