<i>Caulobacter crescentus </i> (IMAGE) Indiana University Caption This image shows Caulobacter crescentus with the holdfast at top and the propelling flagellum at the opposite end. Credit Indiana 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.