Photo of Mouse Embryo 7 and 8 Days After (IMAGE) Research Australia Caption The cells have been colored with different dyes to follow their movement as the embryo develops. Credit Photo by Heidi Bildsoe 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.