(IMAGE) University of Tokyo Caption This is a TOAD image of radical pairs formed from the photoexcitation of flavin adenine dinucleotide (FAD) surrounding a polymer bead. Credit (c) 2015 Jonathan R. Woodward Usage Restrictions For research promotion purposes 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.