Objective To investigate the integration status of the foreign gene in transgenic mice lines.

目的研究外源基因在转基因小鼠及其家系中的整合状况.

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Two of the animals later showed the foreign gene in their reproductive cells.

两种动物之后显示外来基因在他们的生殖细胞.

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Tell the steps to express foreign gene in some mammal cell in the following picture.

解释下图中用动物细胞表达外源基因的步骤.

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