SIRT1 Curbs Cell Division (image) Rockefeller University Press Caption Cells that make c-Myc proliferate in culture (left), but not when SIRT1 is present (right). Credit Yuan, J., et al. 2009. J. Cell Biol. doi:10.1083/jcb.200809167. Usage Restrictions Reporters may freely use these materials in news coverage, with the appropriate credit information. 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.