Scientists are also questioning whether foods with a gene inserted to improve one area of their performance could prove detrimental in another: For one thing, the genes might cause allergic reactions in people who never had a reaction to that food before.

• 科学家还怀疑，带有插入基因的食物改善了它们某一方面的性质，是不是在其他方面也无害呢? 首先，这些基因可能引起人们对以前那种食物从没有过的过敏反应。