TABLE 2.

HAP mutability of wild-type and mutant strains

Straina	Genotype	Avg mutant frequencyb (no. of Rifr mutants/108 cells) at a HAP concentration (μg/ml) of:
		0	0.25	0.50
KA796	Wild type	1.1	1.0	1.2
NR10107	Δ(uvrB-bio)	0.4	13	120
NR12071	moeA120 (mut-1)	1.8	16	710
NR12383	moeA121::mini-Tn10cam	1.1	19	390

^aSee Table 1. 

^bBased on 12 independent cultures for each strain at each dose.