Zebrafish with Curved Spine (IMAGE) Washington University School of Medicine Caption Zebrafish that lacked a manganese-related gene grew curved spines. An inability to properly use the essential mineral manganese could be to blame for some cases of severe scoliosis, according to a new study from Washington University School of Medicine in St. Louis. Credit Gabriel Haller 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.