<i>Helicobacter hepaticus</i> (IMAGE) California Institute of Technology Caption This side view of the bacterium Helicobacter hepaticus shows the flagella and the region in which the chemoreceptors cluster. Credit PNAS/Ariane Briegel, Caltech Usage Restrictions With credit as given above 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.