Van der Donk Group (image) University of Illinois at Urbana-Champaign Caption Illinois chemists discovered a molecule very similar to the antibiotic nisin, found naturally in milk and added to food for decades to fight pathogenic bacteria. The new molecule, geobacillin, is more stable than nisin, which could make it more effective. Credit L. Brian Stauffer Usage Restrictions None 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.