Fig. 1 (IMAGE) Osaka University Caption Transmission electron micrograph of Vibrio cholerae strain O395. Left: Close-up view of type IV pilus TCP. Credit Shota Nakamura Usage Restrictions Cannot be used without permission. 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.