Regenerating Tissue (IMAGE) Universität Bayreuth Caption This is the regenerating tissue (blastema) of a zebrafish tail fin after amputation. Credit Developmental Biology, University of Bayreuth. 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.