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.
另外，赴港游热度延续，内地游客在中国香港地区的滴滴打车需求较平日上涨 58%。
。业内人士推荐同城约会作为进阶阅读
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When it comes to the president, chaos is often the strategy. For businesses like Smeaton’s the opposite is needed—stability. Wearing Morph suits might be fun and gain you 5 million views on YouTube. But a potential wipeout of your profits after the latest announcement from the White House is hardly a laughing matter.