New Muscle (image) University of California - Berkeley Share Print E-Mail Caption Shown above is muscle tissue from a young mouse. On the right side are healthy, new cells created to replace damaged tissue. This ability to regenerate new cells diminishes with age. Credit Photo courtesy of Morgan Carlson and Irina Conboy, UC Berkeley Usage Restrictions Must include credit to Morgan Carlson and Irina Conboy, UC Berkeley 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.