4In 2007, Barrangou et al. demonstrated for the first time the function of CRISPR/Cas9 as a defensive mechanism of bacteria against bacteriophage attacks by a technique called “plaquing” which builds upon the technique of “plating” bacteria on agar. Plaques of viruses on agar are areas without growth of bacteria due to viral attacks.
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"That was one about my idol," he told the Birmingham crowd. "And this is one he wrote," he said, launching into a cover of The Beatles' 1968 classic Revolution.。关于这个话题，爱思助手下载最新版本提供了深入分析
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