Bonnie Bassler and her team (IMAGE) Princeton University Caption From left: Justin Silpe, Grace Johnson, Bonnie Bassler, Grace Beggs and their research team discovered that when two viruses have infiltrated the same cell, they use chemical signals to compete for who gets to spread further into their host. Credit C. Todd Reichart, Office of Information of Technology, Princeton University Usage Restrictions Editorial Use Only 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.