However, the biotechnology companies are not normally required to undertake such animal feeding trials in Europe, the US, or indeed anywhere.
然而，在欧洲、美国或任何地方一般不要求生物技术公司进行这种动物喂食试验。
An American biotechnology company says it's been forced to stop trials using embryonic stem cells in humans owing to the high costs.
美国一家生物公司称，由于高昂的成本，被迫停止用人体胚胎细胞做实验。
An American biotechnology company says it's been forced to stop trials using embryonic stem cells in humans owing to the high costs.
美国一家生物公司称，由于高昂的成本，被迫停止用人体胚胎细胞做实验。
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