The agency said in August it traced three bulls born in the UK with embryos from a cloned cow in the US.

英国食品标准局表示，今年八月份它追踪了三只用来自美国克隆牛胚胎在英国繁殖的牛。

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They were just about to start the process of having another baby with their last embryos when the clinic called.

当接到诊所电话时，他们正打算着用他们的最后一个胚胎孕育一个宝宝。

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Precisely what doctors are supposed to do with these embryos is unclear.

医生们该拿这些胚胎怎么办，具体事项还不甚明了。

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One of those conditions was that federal funds may be used only for studies with embryos derived from private dollars, which is the current law.

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For, instead of starting with human embryos, they started with human body cells.

ECONOMIST: Human embryonic stem cells

He started with mouse embryos and graduated to goats, whose large mammary glands make better milk machines.

FORBES: Charlotte's Goat