Spines (IMAGE) Howard Hughes Medical Institute Caption A forest of dendritic spines protrude from the branches of neurons in the mouse cortex. Credit Gao <em>et al./ Science</em> 2019 Usage Restrictions Must use credit. 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.