TABLE 2.

Susceptibilities to oxacillin and BPR of major epidemic MRSA clones and their oxacillin- and BPR-resistant subpopulations

Strain	MIC (μg/ml) for cell majority		Subpopulation growing on (μg/ml):		MIC (μg/ml) for OXA-resistant subpopulation		BPR MIC (μg/ml) for BPR-resistant subpopulation
	OXAa	BPR	OXA	BPR	OXA	BPR
E2125	6	0.8	400	6	400	0.8	1.5
HPV107	0.8	0.8	400	3	100	0.8	0.8
BK2464	12.5	1.5	400	1.5	200	1.5	3
HDE288	0.8	0.8	400	3	200	1.5	1.5
BK2529	1.5	1.5	400	3	200	1.5	1.5
HAR24	100	1.5	800	3	800	1.5	3
HAR22	100	0.8	400	1.5	800	0.8	3
USA300	0.8	1.5	800	1.5	400	1.5	0.8
COL	>800	3	>800	3	NDb	ND	3
HU25	400	3	800	3	ND	ND	3

^aOXA, oxacillin.

^bND, not determined.