Antibiotics and reagents

Clinical isolates of S. aureus were obtained from the American Type Culture Collection (ATCC, Manassas, VA, USA) or the Biodefense and Emerging Infections Research Resources Repository (BEI Resources, Manassas, VA, USA). Ebselen, linezolid, and mupirocin were purchased from commercial vendors and dissolved in DMSO to prepare 10 mg/mL (or 1 mg/mL for ebselen) stock solutions. Cation-adjusted Mueller Hinton broth (CA-MHB), Tryptic soy agar (TSA), Tryptic soy broth (TSB), mannitol salt agar, phosphate-buffered saline (PBS), hydrochloric acid (HCl), sodium hydroxide (NaOH), petroleum jelly, magnets, Betadine®, buprenorphine, Tegaderm, Uro-bond IV, and 96-well plates were all purchased from commercial vendors.