Knockout Worms (IMAGE) University of California - Berkeley Caption When UC Berkeley researchers knocked out a part of the nematode's mitochondrial protein folding network (right), the worms grew fatter than normal worms (left, stacked together) and accumulated more fat, as shown by the increased red staining. ( image) Credit Hyun-eui Kim/UC Berkeley 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.