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Bacteria can cut up DNA of DNA bacteriophages by using restriction enzymes. Of what I know about restriction enzymes, I think they don't cut RNA. So, do bacteria have any mechanism through which they can protect themselves from RNA bacteriophages ? Do they cut the cDNA made from RNA of bacteriophages ?

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Check out CRISPR-Cas system –  WYSIWYG Aug 24 '13 at 11:40

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