<em>Heligmosomoides polygyrus bakeri</em> (IMAGE) Ecole Polytechnique Fédérale de Lausanne Caption This is the helminth Heligmosomoides polygyrus bakeri (Hpb), which infects rodents. Here seen under fluorescent staining. Hpb was used in the mouse part of this study. Credit Nicola Harris/EPFL Usage Restrictions For educational/journalistic use only. 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.