Jeff Jacot, Rice University (IMAGE) Rice University Caption Research by the lab of Rice University bioengineer Jeff Jacot found that stem cells drawn from the amniotic fluid of pregnant women change their behavior when near heart cells, but do not become heart cells. Credit Jeff Fitlow/Rice University Usage Restrictions None 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.