Genetically Labeled Stem Cells (IMAGE) University of Basel Caption The image depicts Id4 (blue) and GFAP (black) expression in genetically labeled stem cells and their progeny (magenta) in the hippocampus of the mouse brain. The image presents an artistic coloration of the spatial and molecular factors in a niche. Credit University of Basel Usage Restrictions Use with proper credit. 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.