DNA photocleavage assay (IMAGE) Virginia Tech Caption A.J. Prussin II, a second year student at Virginia Tech who is majoring in biochemistry and biology, with a minor in chemistry, has created an LED system that glows a beautiful shade of blue when special molecules successfully bind to DNA. Credit David Zigler Usage Restrictions With coverage or report about A.J. Prussin's technology. 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.