Mention the most significant role of schwann cells.

Explanation

### Step-by-Step Text Solution:

1. **Identify Schwann Cells**: Schwann cells are a type of glial cell found in the peripheral nervous system (PNS). They are essential for the proper functioning of neurons.

2. **Role in Myelination**: One of the most significant roles of Schwann cells is to form the myelin sheath around the axons of peripheral neurons. This myelination is crucial for the rapid transmission of electrical impulses along the nerve fibers.

3. **Support and Maintenance**: Schwann cells provide structural support to neurons and are involved in the maintenance of the nerve fibers. They help in the overall health and functionality of the peripheral nervous system.

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