system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Myelination in peripheral nervous system is done by
assistant
The correct answer is  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