Hydrogrel (L) and Elastic Solid (R) (IMAGE) Syracuse University Caption The left image depicts how each small part of the hydrogel moved based on the movement of embedded fluorescent beads. To the right, a mathematical model of an elastic solid is used to calculate the stress exerted by the bacteria. Credit Syracuse University Usage Restrictions None License Original 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.