Mark Loeb (IMAGE) McMaster University Caption Mark Loeb, McMaster University professor of pathology and molecular medicine and a Hamilton infectious disease physician and microbiologist Credit McMaster University Usage Restrictions To be used when reporting on this story 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.