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Virus Uses CRISPR to Hack Bacterial Immune System

How a viral strain gains the upper hand.

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Viruses are wily predators that can kill their hosts and cause lethal human diseases. They can also hijack CRISPR DNA to help their host, though not without an ulterior motive. In recent years, CRISPR, a sequence of DNA, has become best known for its use in gene editing, when scientists alter or delete DNA in living organisms. It's a technique that may soon revolutionize therapeutics. In nature, bacteria use DNA snippets from viruses to form CRISPR sequences to fight viral infections. The DNA...
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