H. pylori Uses TlpD to Sense Bleach (IMAGE) University of Oregon Caption The bacterial stomach pathogen Helicobacter pylori swims toward a needle filled with bleach. The bacterium uses a protein called TlpD (center) to sense the bleach as an attractant. Credit Arden Perkins Usage Restrictions Image may be used with appropriate credit 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.