Retinal Section (IMAGE) Northwestern University Caption Retinal section from a mouse where cell nuclei are labeled in blue, inhibitory cells are labeled with magenta, and ipRGCs are labeled in green. Credit Northwestern University 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.