Neural stem cells (IMAGE) Duke-NUS Medical School Caption In the Drosophila brain, dormant neural stem cells with protrusions rich in actin filaments. Credit Duke-NUS Medical School Usage Restrictions Credit: Duke-NUS Medical School License Original 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.