Mesecar Lab (image) Purdue University Caption Andrew Mesecar, Purdue's Walther Professor of Cancer Structural Biology, speaks with post-doctoral researcher Yahira M. Baez-Santos (left) in his laboratory. In the background are (from left) graduate student Sakshi Tomar and post-doctoral researcher Sarah E. St. John. Mesecar and his research team study enzymes of the SARS and MERS viruses and create molecules to treat or prevent infection. Credit (Purdue University photo/Steven Yang) Usage Restrictions For editorial use only. 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.