Biochemistry Prof. W. Andy Tao (IMAGE) Purdue University Caption W. Andy Tao, professor of biochemistry at Purdue. Tao and his associates are developing new applications for extracellular vesicles in routine sampling of the body’s response to drug exposure. Credit Purdue Agricultural Communications photo/Tom Campbell Usage Restrictions News organizations may use this image in reports about the research of Purdue University's W. Any Tao and his collaborators. 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.