One cloned calf developed normally for six weeks and then mysteriously stopped producing red blood cells and died.

一只克隆牛出生后6周内发育正常，而后莫名其妙地停止产生红血球而死亡。

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One cloned calf developed normally for six weeks and then mysteriously stopped producing red blood cells and died.

一只克隆牛出生后6周内发育正常，而后莫名其妙地停止产生红血球而死亡。

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