Vial of Bio-oil (IMAGE) University of Michigan Caption Peigao Duan, a graduate student in professor Phillip Savage's lab, holds a vial of bio-oil. Credit Nicole Casal Moore 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.