Taekjip Ha and Jeehae Park, University of Illinois at Urbana-Champaign (image) University of Illinois at Urbana-Champaign Share Print E-Mail Caption Illinois physics professor Taekjip Ha and graduate student Jeehae Park used fluorescence resonance energy transfer to study how an important DNA enzyme regulates damages sections of DNA. The red and green fluorescent dyes allow them to track a single enzyme's activity. Credit L. Brian Stauffer Usage Restrictions None Share Print E-Mail 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.