Mouse Embryo (IMAGE) New York Institute of Technology Caption This image shows Mustn1 expression (purple color) in the musculoskeletal system of a developing mouse (embryonic day 11.5). Credit NYIT Usage Restrictions None 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.