美国一家生物科技公司发现的一种方法也许既可以制造胚胎干细胞也能令大家都满意。

An American biotechnology firm may have found a way to make embryonic stem cells without upsetting anybody.

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首尔国立大学干细胞实验室附属RNL生物科技公司说，这几只嗅癌犬于三周前出生，并将于九月被送往日本接受训练。

RNL Bio, affiliated with the stem cell lab of Seoul National University, said the puppies were born three weeks ago and would be sent to Japan in September for training.

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