Fzd9-null Mouse Vertebra (image) Rockefeller University Press Caption Compared to wild-type (left), a vertebra from a Fzd9-null mouse (right) shows reduced calcein staining (green), indicating a decreased rate of bone formation. Credit Albers, J., et al. 2011. J. Cell Biol. doi:10.1083/jcb.201008012 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.