论文部分内容阅读
成人干细胞有可能发挥许多与胚胎干细胞相同的作用,情况若果真如此,则可避免有关人胚胎应用所引起的伦理道德方面的争论。成年哺乳动物约有20种类型的干细胞。尽管人们认为这些细胞只能产生
Adult stem cells are likely to play many of the same roles as embryonic stem cells, and if so, ethical debate about human embryo use can be avoided. There are about 20 types of stem cells in adult mammals. Although people think that these cells can only produce