Researchers (IMAGE) Virginia Tech Caption Associate Professor of Immunology Xin Luo and doctoral candidate Brianna Swartwout in Luo's lab. Photo by Andrew Mann, Virginia Tech. Credit Andrew Mann, Virginia Tech. Usage Restrictions Credit Andrew Mann, Virginia Tech. 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.