Listeria Research Reveals New Findings (IMAGE) Purdue University Caption Amanda Deering, Purdue professor in the Department of Food Sciences, researches the ability of foodborne pathogens to grow and remain on or in plant tissue such as romaine lettuce. Credit Purdue University 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.