Urea Channels in H. pylori (image) DOE/SLAC National Accelerator Laboratory Caption This diagram shows the first-ever glimpse of the six-molecule ring of urea channels embedded in the membrane of a type of bacteria called Helicobacter pylori. Understanding the structure of the urea channels will allow researchers to design future drugs to target this bacteria, which harm hundreds of millions of people worldwide. Credit Hartmut Luecke / UC Irvine Usage Restrictions Provide credit. 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.