James Godwin, Ph.D., with axolotl (IMAGE) MDI Biological Laboratory Caption A team of scientists led by James Godwin, Ph.D., of the MDI Biological Laboratory in Bar Harbor, Maine, has come a step closer to unraveling the mystery of why salamanders can regenerate while adult mammals cannot with the discovery of differences in molecular signaling that promote regeneration in the axolotl, a highly regenerative salamander, while blocking it in the adult mouse. Godwin is pictured here with a tank containing an axolotl. Credit MDI Biological Laboratory 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.