Figure CEP: Notch activity (green) in embryonic brain stem cells (magenta). (IMAGE) Universitat Pompeu Fabra - Barcelona Caption Figure CEP: Notch activity (green) in embryonic brain stem cells (magenta). Credit UPF authors Usage Restrictions No restrictions. License CC0 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.