Cortical Grey Matter (image) Society for Neuroscience Share Print E-Mail Caption This is a 3D reconstructed confocal image depicting cortical grey matter of a mouse after repetitive diffuse mild traumatic brain injury (rdTBI). We demonstrate a new subtype of atypical reactive astrocytes characterized by downregulation of homeostatic proteins: glutamate transporter 1 (blue) and S100β (green). Interestingly, atypical astrocytes do not undergo cell death after rdTBI, but rather have an enhanced expression of fluorescent protein tdTomato (red). In our model, mice develop spontaneous seizures and we link post-traumatic epileptogenesis with atypical astrocytes. Credit Oleksii Shandra Usage Restrictions None Share Print E-Mail 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.