FIGURE 5.3. This micrograph from the primary visual cortex of a 13-year-old monkey shows two nerve fibers (asterisks) in which the axon has degenerated, leaving empty myelin sheaths behind.

FIGURE 5.3

This micrograph from the primary visual cortex of a 13-year-old monkey shows two nerve fibers (asterisks) in which the axon has degenerated, leaving empty myelin sheaths behind. (Scale bar = 1 μm.)

From: Chapter 5, The Effects of Normal Aging on Nerve Fibers and Neuroglia in the Central Nervous System

Cover of Brain Aging
Brain Aging: Models, Methods, and Mechanisms.
Riddle DR, editor.
Boca Raton (FL): CRC Press/Taylor & Francis; 2007.
Copyright © 2007, Taylor & Francis Group, LLC.

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