Antibiotic susceptibility patterns of S. aureus ATCC 25923 and S. aureus ATCC 43300 by disk diffusion (A) and E test (B). Values are presented as mean ± SD of triplicate experiments. AMP, ampicillin; AMC, amoxicillin/clavulanic acid; P, penicillin; FOX, cefoxitin; CN, gentamicin; C, chloramphenicol; E, erythromycin; DA, clindamycin; CIP, ciprofloxacin; LEV, levofloxacin; SXT, trimethoprim-sulfamethoxazole; LZD, linezolid; VA, vancomycin.