A Helical Trajectory (image) Brown University Share Print E-Mail Caption The image traces the helical trajectory followed by the bodies of bacterial cells as they swim. Researchers have shown that the motion generates thrust. Before this, it was thought that the cell body contributes nothing to swimming in organisms that swim using flagella. Credit Breuer Lab/Brown University Usage Restrictions None Share Print E-Mail 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.