Turkey Tails (image) Bielefeld University Share Print E-Mail Caption Turkey tails are fungi growing on dead wood such as fallen trees. They contain enzymes that can break down estrogen. However, the Bielefeld students are using a synthetic variant in their research. Credit iGEM-Team Bielefeld-Germany Usage Restrictions The image may only be used with appropriate caption or credit. Share Print E-Mail 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.