Ahmedullah Aziz and students in the lab (IMAGE) University of Tennessee at Knoxville Caption Ahmedullah Aziz and students in the lab Credit University of Tennessee, Knoxville Usage Restrictions n/a 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.