Graphical Abstract (IMAGE) University of Helsinki Caption Researchers have developed a method that enables the regulation of a single gene's behavior without changing the genome itself. Credit Professor Otonkoski Lab, University of Helsinki Usage Restrictions The image may only be used with appropriate credit 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.