Irradiation Setup for Photoswitching (IMAGE) University of Groningen Caption Irradiation setup to switch the photoswitchable modulator of bacterial communication from the trans-isomer to the more active cis-isomer. Credit Dusan Kolarski, University of Groningen Usage Restrictions With 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.