. 2003 Mar 1;17(5):603–614. doi: 10.1101/gad.1060603

Table 2.

Mutation rates at the Hprt locus^a

Genotype	Mutation rate^b (×10⁻⁶)	Confidence limits^c (×10⁻⁶)	Fold increase
WT	0.02	0.0005–0.1	1
Exol^−/−	0.6	0.3–0.9	30
Msh2^−/−	3.0	2.4–3.7	150

Fluctuation analysis was performed as recently described (Abuin et al. 2000).

Mutation rates were determined according to calculations derived by Wierdl et al. 1996).

95% confidence interval for mutation rate (Dixon and Massey 1968).