Astrocyte (IMAGE) Duke University Caption Non-neuronal cells called astrocytes (red) churn out hevin (green), a protein crucial for the refinement of neuronal connections in the developing brain. Credit Eroglu lab, Duke University, <i>eLife</i> 2014;10.7554/eLife.04047 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.