Bt corn can be grown using less pesticide, and sometimes even no pesticide.

Bt玉米在生长过程中需要很少，甚至不需要杀虫剂。

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CIBA Research was the first company to develop what has become commonly known as Bt corn.

CIBA研究所是第一家研制出我们通常所称的Bt玉米的公司。

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By splicing the Bt gene that manufactures its toxic protein into the plant (say, corn or potatoes), the entire plant is rendered toxic to the pest, all without the use of pesticides.

通过接合Bt产毒素的基因入植株上，那么整棵植物都可以抵御昆虫而不需农药了。

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"This study does not give any basis for a change in our marketing of Bt-corn, " their spokesperson Sheena Bethell told BBC News Online.

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Novartis Seeds were the first biotechnology company to sell Bt-corn and their products are now grown commercially in the US, Canada, Argentina and Spain.

BBC: GM pollen 'can kill butterflies'

As the Bt-corn fends off insect pests, it also reduces the levels of the mold Fusarium, thereby reducing the levels of the fungal toxin fumonisin.

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