The F.D.A. approval comes a little more than 10 years after the first human embryonic stem cells were isolated at the University of Wisconsin, in work financed by Geron.

• 自威斯康辛大学接受Geron的资助，首次分离出人类胚胎干细胞到FDA批准其用于临床试验经历了10多年的时间。