Researchers have succeeded in developing a human embryonic stem-cell line from an embryo that had died naturally.
研究者已经成功的从自然死亡的胚胎当中培育出了一个人胚胎干细胞系。
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Immortalized human embryonic kidney cell line HEK293 and the human embryonic lung fibroblasts HELF were used as positive control and negative control, respectively.