culture (IMAGE) Rice University Caption Over twenty enzymes are involved in the production of the 21R-citrinadin A molecule. Credit (Photo by Gustavo Raskosky/Rice University) Usage Restrictions Must credit Gustavo Raskosky/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.