Science Video (VIDEO) Salk Institute This video is under embargo. Please login to access this video. Caption Salk scientists uncover a mechanism linking a protein mutation with abnormal nervous system development. Credit Salk Institute Usage Restrictions with credit and related coverage. 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.