They used tissues from human fetuses.

他们使用人体胎儿组织。

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The mast cells in cheek and esophagus of 50 human fetuses were studied with histochemical techniques.

用组织化学技术，对50例不同胎龄胎儿颊部和食管肥大细胞进行了研究。

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Substance P(SP)and motilin were determined in all layer of various gut regions in developing human fetuses.

用放射免疫方法测定了不同胎龄胎儿胃肠道P物质和胃动素的含量。

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But some food companies are using cell lines that were originally derived from human fetuses in order to develop new food products.

FORBES: Biotech's Fear Factor

He has supported several measures to restrict abortion rights, ban partial-birth abortion and define human fetuses as children (with attendant government-provided health benefits).

ECONOMIST: George Bush and the social conservatives