Mash1-transfected Astrocytes (IMAGE) Neural Regeneration Research Caption After one week, Mash1-transfected astrocytes were positive for β-tubulin (green) expression, and 4′,6-diamidino-2-phenylindole marked all cell nuclei in blue. Credit <i>Neural Regeneration Research</i> 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.