Activated Muscle Stem Cells (image) Rockefeller University Press Share Print E-Mail Caption Activated muscle stem cells express MyoD (red) and Cdc6 (green) as they begin to proliferate. Credit Zhang, K., et al. 2010. J. Cell Biol. doi:10.1083/jcb.200904144. Usage Restrictions Reporters may freely use these materials in news coverage, with the appropriate credit information. 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.