Repair after Acute Heart Injury (IMAGE) Cell Press Caption This figure depicts how cardiomyocyte polyploidization and progenitor proliferation repair acute heart injury in neonates, young mammals, and adults. Credit Lazzeri <em>et al./Trends in Molecular Medicine</em> Usage Restrictions Credit Required. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.