‘Nanobot’ viruses tag and round up bacteria in food and water

Tweaking DNA and adding magnetic nanoparticles creates a new tool to test for contaminants

virus illustration

BACTERIA-HUNTING VIRUSES  Viruses (one illustrated, center) can be engineered to carry magnetic nanoparticles and modified DNA, transforming them into nanobots that detect bacteria in water or food.

S. Nugen

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