The Presidential Daily Brief

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    Printed Microfish Could Heal Humans

    Unbelievable, but it’s no fish tale. California researchers are testing an innovative medical tool — tiny “fish” that can swim through your body delivering medicine and vacuuming up toxins, like Star Trek doctors’ sci-fi “nanoprobes.” The 3-D printing is a key innovation: It allows the scientists to design complex robots — no thicker than a human hair — that use chemical reactions to propel them along magnetically-navigated itineraries. If that seems fishy, consider this: Researchers say the next step is engineering the little buggers to do microsurgery.

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