TABLE 2.

MICs of β-lactams for N. farcinica VIC, E. coli JM109 harboring recombinant plasmid pFAR-1, and reference strain E. coli JM109

β-Lactam(s)a	β-Lactam MIC (μg/ml) for:
	N. farcinica VIC	E. coli JM109(pFAR-1)	E. coli JM109
Benzylpenicillin	512	NDb	ND
Benzylpenicillin + CLA	8	ND	ND
Benzylpenicillin + TZB	128	ND	ND
Benzylpenicillin + SUL	256	ND	ND
Amoxicillin	64	256	2
Amoxicillin + CLA	1	8	2
Amoxicillin + TZB	64	256	2
Amoxicillin + SUL	64	128	2
Ticarcillin	256	512	2
Ticarcillin + CLA	8	16	1
Ticarcillin + TZB	128	512	1
Ticarcillin + SUL	256	256	2
Piperacillin	512	32	1
Piperacillin + CLA	32	2	0.5
Piperacillin + TZB	256	32	0.5
Piperacillin + SUL	256	16	0.5
Cephalothin	128	8	4
Cephalothin + CLA	64	8	2
Cephalothin + TZB	128	4	2
Cephalothin + SUL	128	4	2
Cefoxitin	128	4	4
Cefoxitin + CLA	64	4	4
Cefoxitin + TZB	64	4	4
Cefoxitin + SUL	64	4	4
Ceftazidime	>512	0.25	0.25
Ceftazidime + CLA	>512	0.25	0.25
Ceftazidime + TZB	>512	0.25	0.25
Ceftazidime + SUL	>512	0.25	0.25
Cefotaxime	256	0.06	0.06
Cefotaxime + CLA	128	0.06	0.06
Cefotaxime + TZB	128	0.06	0.06
Cefotaxime + SUL	256	0.06	0.06
Aztreonam	>512	1	0.12
Aztreonam + CLA	512	0.12	0.06
Aztreonam + TZB	512	1	0.06
Aztreonam + SUL	512	0.5	0.06
Cefepime	128	0.12	0.06
Cefepime + CLA	64	<0.06	0.06
Cefepime + TZB	128	<0.06	0.06
Cefepime + SUL	128	<0.06	0.06
Imipenem	1	0.06	0.06
Imipenem + CLA	1	0.06	0.06
Imipenem + TZB	1	0.06	0.06
Imipenem + SUL	1	0.06	0.06
Meropenem	0.25	<0.06	<0.06
Meropenem + CLA	0.25	<0.06	<0.06
Meropenem + TZB	0.25	<0.06	<0.06
Meropenem + SUL	0.25	<0.06	<0.06

^aCLA, clavulanic acid at a fixed concentration of 2 μg/ml; TZB, tazobactam at a fixed concentration of 4 μg/ml; SUL, sulbactam at a fixed concentration of 8 μg/ml. 

^bND, not determined.