The number of regeneration nerve fibers, thick and degree of maturity of regeneration myelinated nerve sheath in NRF groups were more than those in the blank control group.

• 超微结构观察表明，实验组有髓神经纤维的髓鞘形态、厚度、成熟度均优于对照组，而变性纤维的数目少于对照组。