脯乳动物中枢神经系统内部只有死亡，没有再生，此乃传统神经科学的“铁律”。科学家们曾一度相信，人类大脑中的一切组织都是与生俱来、发育完好、可供人们亨用终生的。新近几年脑科学的深度发展，使科学家们对神经元生死的理解，对人一生中大脑动态变化的认识，都有了... There is only death within the central nervous system of the mammalian mammary gland, which is the “iron law” of traditional neuroscience. For a time, scientists believed that all the tissues in the human brain are inherently well-developed and lifelong for all. In recent years, the in-depth development of brain science has enabled scientists to understand the life and death of neurons and their understanding of the dynamic changes of the brain in human life.