Spinal Cord of Mutant SOD1 Mouse (IMAGE) Proceedings of the National Academy of Sciences Caption Spinal cord of mutant SOD1 mouse showing motor neurons in green and activated microglia in red. Credit Image courtesy of Marcel F. Leyton-Jaimes. 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.