Byram Bridle, University of Guelph (IMAGE) University of Guelph Caption Prof. Byram Bridle, University of Guelph, led a study that found oncolytic viruses injected into the spleen boosted immune responses, leading to tumors disappearing. Credit University of Guelph Usage Restrictions Only to be used in reference to this story 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.