MRSA (IMAGE) UT Southwestern Medical Center Caption Magnified 20,000 times, this colorized scanning electron micrograph (SEM) depicts a grouping of methicillin-resistant i>Staphylococcus aureus (MRSA) bacteria. Credit Public Health Image Library 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.