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。
On the basis of orthogonal design and colonial diameter as mutation target, the mutagenesis effect of NTG on Pleurotus sp. 8405 is studied.
采用正交试验设计以菌落直径为指标研究了NTG对侧耳8405的诱变效应。
The positive cells expression of P53 had an important relation to the appearance of EBL. B cells with P53 mutation strain might be a target cell to format tumors.
EBL的发生与突变的P53蛋白过表达有重要关系，携带P53突变株的B淋巴细胞可能是形成肿瘤的靶细胞。
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。
Since these modifications usually happen on lysine residues of target proteins, we assumed that the functions of IRF7 could be highly affected by the mutation of lysine residues.
IRF7的活性可能受到乙酰化、泛素化和类泛素化修饰的调控，而这些修饰一般都发生在赖氨酸残基，我们猜测，赖氨酸残基在IRF7的修饰过程中可能具有重要的作用。
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。
Aiello says a mutation could mean that the triclosan can no longer get to the target site to kill the bacteria because the bacteria and the pathway have changed form.
Aiello说，这种突变会使细菌和这条通路发生改变，因此三氯森就不能再结合到靶位点上发挥杀菌作用。
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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