Table 5. Susceptibilities of S. aureus BB270 parental and msr mutant strains to cell wall-active antibiotics.

Strains	Oxacillin	D-cycloserine	Bacitracin
Wild-type BB270	200	75	50
BB270:msrA1	200	75	50
BB270:msrA2	200	75	50
BB270:msrA3	200	75	50
BB270:msrB	400	150	100
BB270:msrA1-B	300	100	75
BB270:msrA	200	75	50
BB270:msrAB	200	75	50

MIC values (μg ml^-1) indicate average of three independent experiments.