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Researchers at Karolinska Institutet have now discovered that after an injury, the rate of cell renewal is even lower than in a healthy heart.

Surprisingly, the researchers found that patients with such a heart pump, who have shown significant improvement in their heart function, can regenerate heart muscle cells at a rate more than six times higher than in healthy hearts.

However, by using a method earlier devised by Jonas Frisén, professor of stem cell research at Karolinska Institutet, the group has been able to count the rate of renewal of myocytes in the heart.

And the number has been increasingly rapidly - at a rate of about 100,000 new leasehold dwellings a year during the past five years.

That burst of axions, however, lasts a mere 10 seconds after the neutron star forms -- after that, the production rate drops dramatically -- though hours before the outer layers of the star explode.