由此产生的杂交后代长成了一个名为胚泡的小胚胎，被植入代孕母亲的子宫，然后变成了多莉。

The resulting hybrid grew into a tiny embryo known as a blastocyst, implanted into the womb of a surrogate mother, and went on to become Dolly.

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胚胎干细胞研究的支持者们指出人的晶胚是在生育过程中形成的，大多数晶胚不是被破坏就是不明原因地被冻结了。

Proponents of embryonic stem-cell research point out that hordes of embryos are created during fertility treatment, and the vast majority of these are either frozen indefinitely or destroyed.

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那些携带灭活基因的胚胚胎干细胞经分离出来后注入称作胚泡的胚前组织中。

Those ES cells carrying the inactivated gene can then be isolated and introduced (by injection) into a pre-embryonic structure called the blastocyst.

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