Turning a Foe into a Friend (IMAGE) Arizona State University Caption ASU researchers can tame Salmonella to act as a vaccine Trojan horse and trigger an immune response against a number of infectious diseases. Credit Jason Drees, Biodesign Institute 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.