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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.
莫娜 · 辛普森是一位美国小说家，代表作《在别处》《凡人》等。她还有两个特殊身份：《辛普森一家》中母亲的角色原型，以及史蒂夫 · 乔布斯的胞妹。
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