Esophagus Stem Cells (IMAGE) University of Pennsylvania School of Medicine Caption Mouse esophagus stem cells have the capacity to contribute to the repair of esophageal epithelium after induction of injury. Red areas are the injected stem cells that have migrated to the injured sites along the lining and further differentiated. Blue areas are cell nuclei. Credit Anil Rustgi, University of Pennsylvania School of Medicine and the Journal of Clinical Investigation. 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.