Metabolic Engineering (IMAGE) DOE/Lawrence Berkeley National Laboratory Caption Metabolic engineering -- the practice of altering genes and metabolic pathways within a cell or microorganism -- could one day be used to mass-produce biofuels, pharmaceuticals and other chemical products from inexpensive and renewable starting materials. Credit Image by Flavio Robles, Berkeley Lab Public Affairs 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.