Demonstrating Quorum Sensing Behavior (IMAGE) University of Pittsburgh Caption Modeled microcapsules demonstrate 'quorum sensing' behavior. A small collection of microcapsules remains dormant (left) whereas a large, crowded population exhibits oscillations in chemical activity (right), represented by circular waves of color. Credit Henry Shum 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.