Edouard Hannezo. (IMAGE) Institute of Science and Technology Austria Caption The ISTA professor and theoretical physicist investigates how cells behave at the right place and time during embryo development. Credit Nadine Poncioni/ISTA Usage Restrictions - License Original 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.