Illustration of Cells (IMAGE) University of Zurich Caption The figure illustrates singles cells as city with intracellular roads. Traffic lights and signs necessary to guide the traffic flow are highlighted. Credit Sarah Steinbacher/UZH 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.