Bubbling (IMAGE) Duke University Caption Inside this bubbling vial, Duke chemist Thomas Theis holds a catalyst that is transferring polarization from hydrogen gas to a molecular tag, turning it into a long-lived 'lightbulb' for more precise magnetic resonance imaging. Credit Kara Manke, Duke 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.