Wiring (IMAGE) La Jolla Institute for Immunology Caption Enhancers serve as specific switches that turn on genes in a cell specific manner but it has been difficult to determine which switch is connected to which gene. Credit Alex Fung 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.