A Place of Learning (IMAGE) Columbia University Caption A mouse hippocampus showing the nuclei of neurons (blue) and RNA (red) derived from the Pdz8 gene that researchers used to investigate the role of intracellular calcium in learning. Credit Stephanie Herrlinger/Columbia’s Zuckerman Institute Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. No derivatives or adaptations of the work are permitted. License CC BY-NC-ND 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.