This, coupled with immunotherapy which boosts efficacy of our own defense mechanisms - for example, NK cell doping via LY49D/DAP12 - is quite exciting. As some

This, coupled with immunotherapy which boosts efficacy of our own defense mechanisms - for example, NK cell doping via LY49D/DAP12 - is quite exciting. As someone else noted, THIS is what CRISPR was evolved to do. It was a DNA-based immune system used by bacteria to explicitly identify an invading virus via DNA, and to store a record of previously unknown virus for future reference. And, it was intended to function continually, in a living organism.