Red Fluorescent <i>C. elegans</i> (IMAGE) Children's Hospital of Philadelphia Caption The red fluorescent areas in this image of the microscopic worm C. elegans mark free radicals that build up in worms with mitochondrial disease. Credit The Children's Hospital of Philadelphia 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.