总部设在加利福尼亚的杰龙是第一家对使用人类胚胎干细胞的治疗进行测试的美国公司。
Geron, based in California, is the first American firm to test a treatment using human embryonic stem cells.
对这些问题的讨论将有助于更好地研究人类胚胎干细胞的使用问题。
The discussions for the issues are helpful better to study the use of human stem cells.
对胚胎干细胞的试验已经经历了十年时间了，但是对人类首次胚胎干细胞的试验在星期五刚刚被正式批准。
It was nearly a decade in the making, but the first human trial using embryonic stem cells was approved on Friday.
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