Table 1 Minimum inhibitory concentrations (MICs) of antibiotics in planktonic S. aureus, low biofilm-forming CYL1135, and high biofilm-forming CYL1106 strains

Penicillins

 Bacampicillin

0.25

0.5

0.5

 Amoxicillin-clavulanate

0.5

1

1

 Ampicillin-sulbactam

1

2

2

Quinolones

 Ciprofloxacin

0.125

0.5

0.5

 Norfloxacin

0.5

1

1

 Moxifloxacin

0.06

0.06

0.06

Cephalosporins

 Cefaclor

1

4

8

 Cefotaxime

0.5

1

2

 Ceftriaxone

2

2

2

Aminoglycosides

 Amikacin

2

8

16

 Kanamycin

1

16

16

 Tobramycin

0.5

2

2

Glycopeptides

 Teicoplanin

0.125

0.25

1

 Vancomycin

0.5

1

2

Others

 Erythromycin

0.25

0.25

0.25

 Fosfomycin

2

64

128

 Quinupristin–dalfopristin

0.125

0.125

0.125