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Published online 2 April 2009 | Nature | doi:10.1038/news.2009.232

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Carbon dating shows humans make new heart cells

The cold war helps settle a hot debate about how hearts grow.

Fallout from nuclear bomb tests during the cold war has just yielded encouraging news for those searching for ways to reverse heart disease.

A team led by Jonas Frisén from the Karolinska Institute in Stockholm has shown that adult human hearts make new muscle cells, albeit very, very slowly1.

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