Bryan Hsu (IMAGE) Virginia Tech Caption Bryan Hsu (at far right) and his team are breaking new ground in their research on the role of viruses in the gut microbiome of mammals. Credit Virginia Tech Usage Restrictions Credit VT 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.