Prof. Dr. Ruediger Simon (IMAGE) Heinrich-Heine University Duesseldorf Caption Prof. Dr. Ruediger Simon, Institute of Developmental Genetics at HHU Credit HHU/Steffen Koehler Usage Restrictions Publication outside EurekAlert platform has to be permitted by HHU, kommunikation@hhu.de. 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.