Tapeworm (IMAGE) PNAS Nexus Caption Biological Inspiration: Hooked scolex of Taenia solium seen partially deployed, as well as a magnified view of both a retracted and deployed hook array in a related species. Credit Maquignaz et al. Usage Restrictions None License Original 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.