John Bell, The Ottawa Hospital (IMAGE) Alliance for Cancer Gene Therapy Caption Dr. John Bell and his team at The Ottawa Hospital used the Maraba Virus along with checkpoint inhibitors as part of cancer immunotherapy to successfully treat breast cancer. Dr. Bell's work is supported through a grant from the non-profit the Alliance for Cancer Gene Therapy. Credit The Ottawa Hospital Usage Restrictions None 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.