长期以来,中枢神经系统(Central nervous system,CNS)的损伤与再生一直是困扰人类健康的难题,传统认为,成年哺乳动物脑内神经细胞不具备更新能力,一旦受损乃至死亡便不能再生。现这一观念已被打破,近年来科学家发现胚胎乃至成体,包括人类的中枢和外周神经系统(peripheralnervou For a long time, the damage and regeneration of the central nervous system (CNS) has been a difficult problem that has plagued human health. Traditionally, neuroblasts in the adult mammalian brain do not possess the ability to regenerate, and once damaged or even died, they can not regenerate. Now this idea has been broken, in recent years scientists found that embryos and even adults, including the human central and peripheral nervous systems (peripheral nervou