Failure to Migrate (IMAGE) Society for Neuroscience Caption Section through the optic tectum of a chicken embryo, showing that MCT8-deficient cells (right panel) fail to migrate to their normal position. Credit Pieter Vancamp 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.