传统认为哺乳动物和人脑神经细胞一经发育成熟即不再进行增殖、分化 ,不具备再生能力 ,只有细胞的不断退化和死亡 ,因此中枢神经系统损伤后基本上不能恢复。近年来的研究发现 ,胚胎早期脑室和脑室下区、成年脑室区、纹状体、海马齿状回、脊髓等部位神经干细胞分布广泛 ,这些神 Traditionally, mammalian and human brain neurons, once matured, no longer proliferate, differentiate, and have no regenerative capacity, and only cells continue to degenerate and die, so that the central nervous system can not be recovered substantially after injury. In recent years, the study found that early embryonic brain and subventricular zone, adult ventricular zone, striatum, hippocampal dentate gyrus, spinal cord and other parts of neural stem cells are widely distributed, these gods