The traditional alkaline method to isolate plasmid DNA takes andsystem requires strict control.

实验室中常用的质粒提取方法是碱裂解法.

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The plasmid transforming activity is positive re lated with the frequency of the plasmid DNA's breakage.

质粒转化活性的大小与DNA单双链断裂频率呈正相关.

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These novel vaccine strategies, including plasmid DNA, live recombinant vectors and combined vaccine.

目前的疫苗研制策略包括质粒DNA载体, 活重组载体和联合疫苗等.

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