The adult rat was undergone unilateral epineurial suture of the sciatic nerve.HRP was used to show the soma of regenerative axon after the rat was allowed to survive for 4 or 9 weeks.The labeled somas were observed under the light or the electron microscope.The results suggest:(1) The number of somototopy-restorative somas in the repaired side is less than the number of the labeled somas in the control side,a lot of somototopy-abnormal somas appear in the repaired side,and the proportion of small motoneuron...