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Microbiology

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E. coli

BAD BLOOD A strain of E. coli (computer-generated image above) that causes severe diarrhea can latch onto intestinal cells more easily in people with type A blood, a discovery that hints at a potential vaccine.

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.

viruses

SUPERSIZE ME   The more scientists look, the more giant viruses pop up. The viral behemoths, which largely infect amoebas, may be common worldwide. 

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