This image shows colonies of methicillin-resistant Staphylococcus aureus bacteria. Photo credit: Janice Haney Carr, Jeff Hageman, M.H.S, U.S. Centers for Disease Control and Prevention Researchers at the University of California San Diego School of Medicine have discovered a previously unrecognized mechanism by which Staphylococcus aureus delays wound healing. In a study, published in The   Journal of Clinical Investigation , the researchers found that quorum sensing—a proces