Fluorescence imaging of C. elegans (IMAGE) Boyce Thompson Institute Caption Fluorescence imaging of C. elegans fed with a new chemical probe developed in this study – a branched-chain fatty acid analog. The red signal derives from selective 'click chemistry' reaction between the probe and a red fluorescent dye. Credit Schroeder Lab/Boyce Thompson Institute Usage Restrictions Credit License Original 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.