Snail Protein and Brain Injury (IMAGE) George Washington University Caption In vivo overexpression of Snail (Red) in microglia/macrophage cells in injured cortex. Reactive astrocytes are labeled in green bordering the lesion. Credit The George Washington University Usage Restrictions No Restriction 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.