1. Whitish bands composed of medullated nerve fibres radiating out from the optic disc are of no pathological significance and must not be confused with papilloedema .

2. The article introduces the factors of the medullated and dead wool and the effects for dyeing gets.

3. The article introduces the factors the medullated and dead wool and the effects for dyeing gets.

4. Observation with transmission electron microscope: There were regeneration medullated nerve fibers in myoblast group and extracellular matrix gel group.

5. We find that the tone-on-tone effects of the medullated and dead wool to the normal wool is good.

6. Result:The regenerated nerves of decimeter wave sides had more medullated fibers, larger mean axons diameters and thicker myelin sheath than those of control sides.