(IMAGE) Karlsruher Institut für Technologie (KIT) Caption First, an inactivated photo-switchable antibiotic was added to a bacterial lawn. Then, a mask was applied and the lawn was exposed to light for the specific activation of the antibiotic. Credit Photo: Babii et al., Angewandte Chemie, 2014 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.