Comparison (IMAGE) Imperial College London Caption Bacteria producing chemicals with (L) and without (R) the bioderivitization step. With bioderivitization, the bacteria are healthier (darker green) Credit Patrik Jones/Imperial College London 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.