The Obama administration,he added, must make clear that it does not view engagement with Iran as a process without an end, but as a means to identify ends that would benefit both countries.
VOA: standard.2009.04.28
It takes advantage of the specificity of the restriction enzymes, the fact that we know what the gene sequence that we're looking for, and using this technological process of electrophoresis to identify changes that we predict.
这个方法利用了限制酶特有的性质,我们知道我们在找什么样的基因序列,从而才能利用电泳这个技术流程,来识别出我们预计的情况
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