CRISPR Duke D (IMAGE) Duke University Caption Light-activated genetic manipulation is demonstrated by shining light through a stencil to turn on fluorescent genes in cells. Credit Charles Gersbach, Duke University 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.