The sheep were cloned using a method called somatic cell nuclear transfer.

使用一种称为体核植方法进行克隆。

This process—somatic cell nuclear transfer—has been used for decades to duplicate livestock and pets.

这个过程——体核植——几十年来一直被用来复制牲畜和宠物。

Then, they take the nucleus of a somatic cell, like a skin cell, from the thing they want to clone and insert it into the egg.

然后，他们从他们想要克隆东西中取出体核， 如皮肤，并将其插入卵子中。

The process of somatic cell nuclear transfer involves removing genetic material from the nucleus of a host egg cell and replacing it with the nucleus from adult cells.

体核植过程包括从宿主卵核中除遗传物质，并用成年核取而代之。