Signal Molecules Induce Fluorescence (VIDEO) Technical University of Munich (TUM) This video is under embargo. Please login to access this video. To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Caption The red droplet contains a solution of signal molecules that diffuse into the chain of artificial cell compartments to the right. The droplets contain a biochemical system that temporarily responds to this signal. As a result, the droplets light up in a fluorescent green and then darken again -- a 'signal' runs from left to right. Credit Aurore Dupin / TUM 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.