Bacterial Locomotion (IMAGE) Brown University Caption Brown University physicists have completed the most detailed study of how bacteria such as the single-celled Caulobacter crescentus swim and how that swimming motion is influenced by drag and a phenomenon known as Brownian motion. Credit Guanglai Li, Brown University 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.