First, they used genetic tools to deactivate cell receptors-molecules that send and receive signals to and from other cells-for testosterone and estrogen in the developing limb buds of mouse embryos.

首先，他们用基因手段禁止了细胞受体的活动——细胞受体即那些向其他细胞发送和从其他细胞接受信号的分子们——因为雌激素和雄激素存在于正在发育的老鼠胚胎的肢芽中。

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Meanwhile, Evans discovered that stem cells could be extracted from mouse embryos and cultivated to grow into any cell type.

与此同时，埃文斯发现可以从小鼠胚胎中提取干细胞，并可培养成所有类型的细胞。

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Objective To isolate and culture mouse embryonic stem cell from embryos of mouse.

目的从大鼠的早期胚胎分离和培养胚胎干细胞。

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