Chad Cowan, Harvard University (IMAGE) Harvard University Caption This is Assistant Professor Chad Cowan of the Harvard Stem Cell Institute and Harvard's Department of Stem Cell and Regenerative Biology. Credit B. D. Colen/Harvard University Usage Restrictions This image may only be used with stories about the work described in the attached press 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.