着重论述了宏基因组学的研究方法，包括DNA的提取、文库的构建以及筛选策略的选择。
Methods in metagenomic study, including DNA extraction, library construction and screening were discussed in this paper.
对土壤宏基因组DNA的提取、宏基因组文库的构建和筛选等方面的研究现状和进展进行了简要综述。
Progress on the research of metagenomic DNA purification, metagenomic library construction and screening of soil microorganisms are reviewed briefly.
他还构建了一个拥有正确结合构象的突变核糖体文库。
And he has a library of mutant ribosomes that have the right kind of sockets-they'll accept mirror amino acids.
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