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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.

    By Damaris Christensen
  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.

    By Damaris Christensen
  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.