Stem Cells Lacking Smc2 (IMAGE) Rockefeller University Press Caption The nuclei of embryonic stem cells lacking Smc2 (right) are large and misshapen. Credit Fazzio, T.G., and B. Panning. 2010. J. Cell Biol. doi:10.1083/jcb.200908026. Usage Restrictions Reporters may freely use these materials in news coverage, with the appropriate credit information. 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.