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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Oil prices also jumped, with the global benchmark Brent crude briefly hitting $82 (£61) a barrel on Monday, after at least three ships were attacked near the Strait of Hormuz at the weekend.
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