Didemnum vexillum (IMAGE) University of Barcelona Caption El estudio revela que el 44 % de las colonias del invertebrado marino Didemnum vexillum en el delta del Ebro (Tarragona, España) son quimeras formadas por partes con diferente dotación genética. Credit Xavier Turon (CEAB-CSIC) 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.