Dr. John Bell (IMAGE) The Ottawa Hospital Caption Dr. John Bell, a senior scientist at The Ottawa Hospital and professor at the University of Ottawa, is hoping viruses will take cancer immunotherapy to the next level. Credit The Ottawa Hospital Usage Restrictions For use only with stories about this research. 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.