Video: Twist1 Induces Cellular Migration (video) Johns Hopkins Medicine Loading video... Caption Without Twist1 expression, mammary duct tissue fragments maintain a smooth surface (left). When Twist1 is turned on, cells rapidly detach and migrate away from the tissue (right). Both tissue fragments were isolated from the same mouse. Credit E.R. Shamir, et al. J Cell Bio, doi: 10.1083/jcb.201306088 Usage Restrictions None 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.