<i>C. elegans</i> Worm (IMAGE) Children's Hospital of Philadelphia Caption In this mutant worm, about 1/20 of an inch long, green flourescence marks areas of biological stress from malfunctioning mitochondria. 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.