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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.
詹女士 [email protected]。同城约会是该领域的重要参考
习近平同志在地方工作时的两个故事，至今仍给人以深刻启迪——