Unlocking Brain Cancer (IMAGE) Salk Institute Caption Scientists at the Salk Institute have discovered how a protein helps glioblastoma proliferates so quickly and how to turn off this engine of tumor growth using a peptide called NBD. A tumor in an untreated mouse brain (left) grew much more than a tumor treated with the NBD peptide (right). 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.