目前基因工程所用的质粒载体主要是以天然细菌质粒的各种元件为基础重新组建的人工质粒pbr322质粒是较早构建的质粒载体其主要结构如图一所示 Sketch Coloring Page

目前基因工程所用的质粒载体主要是以天然细菌质粒的各种元件为基础重新组建的人工质粒pbr322质粒是较早构建的质粒载体其主要结构如图一所示 Template

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tomski目前基因工程所用的质粒载体主要是以天然细菌质粒的各种元件为基础重新组建的人工质粒pbr322质粒是较早构建的质粒载体其主要结构如图一所示 coloring

目前基因工程所用的质粒载体主要是以天然细菌质粒的各种元件为基础重新组建的人工质粒pBR322质粒是较早构建的质粒载体其主要结构如图一所示 sketch template

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目前基因工程所用的质粒载体主要是以天然细菌质粒的各种元件为基础重新组建的人工质粒， pBR322 质粒是较早构建的质粒载体，其主要结构如图一所 sketch template

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