Scientific Team (IMAGE) University of Barcelona Caption The experts Paula Esteller, Bru Cormand and Òscar Lao. Credit UNIVERSITY OF BARCELONA / CNAG-CRG Usage Restrictions The image may only be used with appropriate caption or credit. 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.