Figure 1 (IMAGE) National University of Singapore Caption Schematic showing the development of a new strategy for RNA delivery and reversible control. This method involves modifying the RNA with the addition of a disulfide bond that prevents it from interacting with cellular machinery. When introduced into a cellular environment with reducing agents, this modification is reversed allowing the RNA to exert its desired effect. Credit Angewandte Chemie International Edition Usage Restrictions NA 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.