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  Wyss Institute Core Faculty member William Shih and Technology Development Fellow Steven Perrault explain why DNA nanodevices need protection inside the body, and how a virus-inspired strategy helps protect them.   It’s a familiar trope in science fiction: In enemy territory, activate your cloaking device. And real-world viruses use similar tactics to make themselves invisible to the immune system. Now scientists at Harvard’sWyss Institute for Biologically Inspired Engineering have mimicked these viral tactics to build the first DNA nanodevices that survive the body’s immune defenses.

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