The nucleus is removed from the egg cell.

细胞核已经从卵细胞中移除。

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However, something similar could probably be made by inserting the nucleus of a human cell into the egg of another species, such as a rabbit.

然而，类似的事情可以通过把人类细胞核植入其他物种(比如，一只兔子)的卵细胞来完成。

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They then transferred the fibroblast's nucleus to another dog's egg cell, with its nucleus removed.

然后他们把这个细胞核植入另一只狗的卵细胞中，而这个卵细胞的细胞核已经被移除。

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This begins with a stimulus, such as an electric shock, that promotes the fusion of an egg cell that has had its nucleus removed with a donor cell whose nucleus it will assume.

ECONOMIST: Cloning around

Sir Ian and his team fused the genetic information from an adult sheep cell nucleus with an egg cell to form an embryo that developed into a genetically identical copy of the original adult.

BBC: Dolly the sheep pioneer knighted

Certainly, something unusual is happening in the process by which the egg cell sends out signals to reprogram its new nucleus and put the developmental genes back into action.

ECONOMIST: Cloning around