Fruit Fly Intestinal Tissue, (2 of 2) (image) Salk Institute Share Print E-Mail Caption The Salk scientists and their collaborators discovered that activating the fruit fly version of the PGC-1 gene delayed this aging process, while simultaneously extending lifespan. Credit Images: Courtesy of Salk Institute for Biological Studies Usage Restrictions News media reproduction to illustrate this story permitted with proper attribution as provided above. For one time use only. 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.