Jewel Lake, Tilden Park (IMAGE) DOE/Lawrence Berkeley National Laboratory Caption This lake in Berkeley, Calif., was one source of the toluene-producing enzyme (phenylacetate decarboxylase) discovered in the JBEI study. Credit (Credit: Chickmarkley) 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.