Demyelinating axons in the peripheral system, may be caused by vaccines, autoimmune disease, and toxins/infection/drugs.
Demyelinating axons in the brain are caused by multiple sclerosis, and parasites, and some drugs, strokes.
I put many links up in the subforum.... this one especially is easy to understand:
https://faculty.washington.edu/chudler/cells.html
The bright green stuff on the axon is the myelin.
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All truths are easy to understand once they are discovered; the point is to discover them.-- Galileo Galilei
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Weezie looking at petunias 8.25.2017
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