Richard Lee and Amy Wagers, Harvard Stem Cell Institute (image) Harvard University Share Print E-Mail Caption Richard T. Lee, M.D., and Amy Wagers, PhD, Harvard Stem Cell Institute Principal Faculty members, have identified a protein that can restore the enlarged, weakened hearts of aging mice to the size and functional status of the hearts of healthy young mice. Credit B. D. Colen/Harvard University Usage Restrictions This image may only be used with stories about the Lee/Wagers paper in the 5/9/13 issue of Cell. Share Print E-Mail 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.