Methicillin-resistant Staphylococcus aureus (IMAGE) Johns Hopkins Medicine Caption Scanning electron micrograph of methicillin-resistant Staphylococcus aureus (MRSA) bacteria being engulfed by an immune cell known as a neutrophil. Johns Hopkins Medicine researchers have discovered that blocking a specific group of enzymes called caspases boosts the ability of immune cells, including neutrophils, to fight MRSA and other dangerous skin infections -- and without the use of antibiotics. Credit National Institute of Allergy and Infectious Diseases, National Institutes of Health 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.