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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.。业内人士推荐夫子作为进阶阅读
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“小马来了，心里就踏实了。”王守芬说。马怀龙特意买来红灯笼，帮老人挂好。王守芬的脸上笑开了花，但又嘱咐起马怀龙：“小马，你可别再买这买那了，你那些工资，可都搭在我们这里了。”