Amy Wagers, Harvard University (IMAGE) Harvard University Caption This is Amy Wagers, Harvard Stem Cell Institute Principal Faculty Member and professor in Harvard's Department of Stem Cell and Regenerative Biology. Credit B. D. Colen/Harvard University Usage Restrictions Image may only be used in conjunction with attached GDF 11 release 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.