Towards a natural pacemaker

Artificial heart pacemakers have saved and extended the lives of thousands of people, but they have their shortcomings - such as a fixed pulse rate and a limited life. Could a permanent biological solution be possible?

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<p><a href="http://www.physorg.com/news158493548.html">Towards a natural pacemaker</a></p> <p>Artificial heart pacemakers have saved and extended the lives of thousands of people, but they have their shortcomings - such as a fixed pulse rate and a limited life. Could a permanent biological solution be possible?</p>