Mice and methionine sulfoxide. (IMAGE) University of Kansas Caption In a series of tests, KU researchers assessed the memory of injected mice against similar mice that didn’t receive the corn-based methionine sulfoxide. Credit Smith, et al. Usage Restrictions None 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.