Trying gene therapy to create biological pacemaker

July 17, 2014 1:24 AM

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WASHINGTON (AP) — No batteries required: Scientists are creating a biological pacemaker by injecting a gene into the hearts of sick pigs that changed ordinary cardiac cells into a special kind that induces a steady heartbeat.

The study, published Wednesday, is one step toward developing an alternative to electronic pacemakers that are implanted into 300,000 Americans a year.

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