Powerful tool for genetic engineering

Viruses cannot only cause illnesses in humans, they also infect bacteria. Those protect themselves with a kind of “immune system” which — simply put — consists of specific sequences in the genetic material of the bacteria and a suitable enzyme. Scientists have now shown that the dual-RNA guided enzyme Cas9 which is involved in the process has developed independently in various strains of bacteria.
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Source: http://feeds.sciencedaily.com/~r/sciencedaily/top_news/top_science/~3/d9XxluXn3_c/131122112721.htm

    

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