Multidrug Efflux Pump (IMAGE) Iowa State University Caption This is a ribbon diagram of the three-part efflux pump of the Campylobacter jejuni bacterium. Credit Edward Yu/Iowa State 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.