| Type | MGI:General | Description | at 6.5 months a small number of large ventral motor neuron axons exhibit degeneration, although the loss is not significant at 8 months (disease onset) 25% of large motor axons are absent , of the remaining axons, 10% are undergoing degeneration and within another two weeks 66% are absent small caliber axons are not affected at 8 months 2.5% of large sensory axons are absent among large axons, 7.5% of dorsal root axons are absent at end stage |
