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  1. Health & Medicine

    Success clearing clogged arteries

    In the past 10 years, angioplasty and other procedures to unblock clogged arteries have steadily improved, probably due to increasing use of wire-mesh tubes called stents to help patients’ arteries stay open.

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  2. Health & Medicine

    A sticky problem solved

    Researchers have identified a protein integral to making blood clot, a finding they hope will lead to better drugs for preventing clots in people at risk of heart attack or stroke.

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  3. Plants

    Dead pipes can still regulate plants’ water

    Physiologists say they have demonstrated for the first time that dead xylem cells in plant plumbing can control water speed.