VALVE 2 (IMAGE) Rice University Caption Rice University graduate student Matthew Sapp sets up an experiment to test the effects of hypoxia on heart valve tissue. Rice researchers found that different valves in the heart respond differently to oxygen starvation. Credit Jeff Fitlow/Rice 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.