Lhx1 and Vip (IMAGE) Salk Institute Caption A peptide responsible for cell communication in the brain, Vip (green) is reduced in the brains of mice that have little or no Lhx1 (right). Credit Salk Institute for Biological Studies 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.