Protein Clumps (IMAGE) Umea University Caption Clumps of SOD1 protein (coloured brown) in the nerve cell that handle the body's motor functions. The image comes from an ALS patient lacking mutation in SOD1. This indicates that the protein is involved in the disease mechanism of ALS even if no mutation occurs in the protein. Credit Photo: Karin Forsberg 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.