Schwann's cells begin to form myelin sheaths around axons in the peripheral nervous system
A)when neurons are injured.
B)during fetal development.
C)after birth.
D)only in response to electrical stimulation by neuroglial cells.
E)during the early onset of Alzheimer's disease.

Question

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Schwann's cells begin to form myelin sheaths around axons in the peripheral nervous system during fetal development.

Schwann's Cells Begin to Form Myelin Sheaths Around Axons in the Peripheral