Table 1. Minimal inhibitory concentrations (MIC) of some antibiotics for PA7.

Class	Antibiotic	MIC µg/ml
Penicillins	piperacillin	>512
	carbenicillin	>512
Cephalosporins	ceftazidime	128
	cefoperazone	>32
	cefotaxime	>32
	ceftriaxone	>32
	ceftizoxime	>32
	cefotetan	>32
	cefoxitin	>16
	cefuroxime	>16
	cephalothin	>16
Monobactam	aztreonam	64
Carbapenems	imipenem	2
	meropenem	1
Quinolones	ciprofloxacin	>128
	levofloxacin	>32
	norfloxacin	>8
	gatifloxacin	>8
Aminoglycoside	amikacin	>32
Chloramphenicol	chloramphenicol	256