Sciatic nerve lesion model was established in rats, and the morphological changes of neuron cells of DRG treated with methycobal were observed by light and electron microscopy.

• 以大鼠坐骨神经建立周围神经损害动物模型，以背根神经节病理切片（光镜、电镜）中的神经元变化情况为观察指标，考察甲钴胺对坐骨神经损害后神经元的影响。