Methods A model for resection of sciatic nerve was used.L4-6 spinal cord was taken,and sectioned (paraffin embectling) and stained in brilliant cresyl violet.

• 方法建立坐骨神经切断损伤模型，脊髓L4-6腰膨大连续石蜡切片，焦油紫尼氏染色的方法。