TABLE 3.

Summary of clarithromycin MBC₉₉s^a

Strain	MIC or MBC99 (μg/ml) at:
	pH 6.8		pH 7.2
	MIC	MBC99	MIC	MBC99
M. genavense
1924	UIb	≤0.06	UI	≤0.06
2635	≤0.06	0.25	≤0.06	0.12
2682	≤0.06	UCc	≤0.06	UC
2709	≤0.06	0.12	UI	≤0.06
M. xenopi ATCC 19970	≤0.06	>1.0	≤0.06	>1.0
M. simiae ATCC 25275	4.0	>8.0	8.0	8.0

^aBased on 99% reduction in viability. 

^bUI, data uninterpretable, because control vials reached a GI of 50 after day 10 or before day 4. 

^cUC, unable to calculate, because the inoculum viability cultures failed to grow.