But it can take a long time for the right mutation to occur, especially if there is a very small target, like the region of DNA that controls a gene.
但要得到最合适的变异基因，耗费的时间会非常长，尤其是所要达到目标非常小时，如DNA中用来控制别的基因的区域部分，将是一项旷日持久的工程。
Unlike a genetic mutation that changes the function or activity of a gene, which can be inhibited by a well-tailored drug, loss of a gene leaves nothing for the drug to target.
不同的基因突变改变了功能或活动的一个基因，它可以抑制一种非常合适的药物，失去了基因树叶什么药物目标。
The discovery could lead to development of drugs that target the defective gene, said the researchers at Duke University Medical Center who discovered the mutation.
杜克大学医学中心的研究人员声称，这项发现将带来药物的变革以针对该致病基因。
Methods PCR method was applied to detect the KDR mutation of the target site (sodium channel) gene.
方法采用聚合酶链反应(PCR)方法，用自行设计的特异引物，对昆虫的钠离子通道基因进行扩增。
Methods PCR method was applied to detect the KDR mutation of the target site (sodium channel) gene.
方法采用聚合酶链反应(PCR)方法，用自行设计的特异引物，对昆虫的钠离子通道基因进行扩增。
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