Developing Mouse Brain (IMAGE) Heidelberg University Caption Chromosome segregation error in a dividing neural stem cell (magenta) during neurogenesis in a mouse developing brain. Credit Image: © Janina Hattemer and Sergio Acebrón Usage Restrictions The photo material may be used only in connection with the contents of this press release. 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.