Spinal Cords: Original and Regenerated (image) University of Pittsburgh Schools of the Health Sciences Share Print E-Mail Caption The regenerated lizard spinal cord (top right) contains fewer nerves than the original (top left) and they are encased in a tube of cartilage. In contrast, regenerated salamander spinal cord (bottom right) has all of the structure and form of the original (bottom left). Credit Thomas P. Lozito Usage Restrictions Release is embargoed until 3 P.M., Monday, August 13, 2018 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.