researchers (IMAGE) Rice University Caption Researchers in the lab of Rice’s Xue Sherry Gao discovered a new class of Diels-Alderases. Credit Photo by Jeff Fitlow/Rice University Usage Restrictions Must credit Jeff Fitlow/Rice University. License Original 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.