Ribbonworm Regenerating a Head (IMAGE) University of Maryland Caption Ribbonworm (Tubulanus sexlineatus) re-growing a head, seen as the lighter pigmented section on the left. Credit Photo Credit: Terra C. Hiebert 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.