TABLE 2.

Effect of oxygen on inhibition by lansoprazole, AG-1789, rotenone, and antibiotics of H. pylori growth^a

Compound	MIC (μg/ml) in
	8% O2	20% O2
Lansoprazole	3.1	0.8
AG-1789	1.6	0.4
Rotenone	2.0	0.5
Penicillinb	0.025	0.025
Erythromycin	0.125	0.125
Rifampin	0.02	0.02

^aMICs were determined as described in Materials and Methods. 

^bResults for penicillin are given in arbitrary units per milliliter.