Are all axons covered with myelin? No; they can be either myelinated or unmyelinated. Myelinated axons are ensheathed along their entire length. The axon caliber (diameter) in mammalian PNS ranges ...

(B) Illustration of transverse section of myelinated axon at the internode. (C) Light microscopy of a mouse sciatic nerve at lower magnification. Toluidine blue staining. Myelin is stained in blue.

A gradual loss of brain tissue is a natural part of aging, but one of the longest-running brain scan studies has now revealed ...

Based on the findings previously collected by Bellen and other researchers, Nave and his colleagues hypothesized that myelin, ...

In contrast to gray matter that is formed from neurons and their unmyelinated fibers, the white matter below them is formed predominantly by myelinated axons interconnecting neurons in different ...