epiphyseal plate

For exploration of the effect of nerve growth factor (NGF) in plasticity of spinal lamina Ⅱ, fifteen adult male catswere used to establish spared dorsal root prcparation (i.

为探讨神经生长因子（NGF）在部分去背根传入猫脊髓Ⅱ板层可塑性中的作用，本文采用成年雄猫15只，建立单侧备用根模型（即切断一侧L1～5、L7～S2节段脊髓背根，保留L6背根），术后分别存活3、5和11d，灌流固定，取L5、L6、L7脊髓冻切。