A 20 cent tool could save lives and transform health care

Scientists at Princeton University invented a low-cost medical device that could save lives and revolutionize health care. The paperfuge is centrifuge made of paper, string, and plastic that can separate blood cells with no electricity. And it only costs 20 cents. Researchers were inspired by whirligig toys and believe invention will help in diagnosing malaria, HIV, and other diseases around the world.

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