Fig. 2

Mutagenicity of AF-2 in the Ames test and the influence of bacterial nitroreductase on its mutagenicity (A) Base substitutions and (B) Frameshift mutations ○, TA100 without S9 mix; ●, TA100 with S9 mix; △, YG7128 without S9 mix; ▲, YG7128 with S9 mix; □, TA98 without S9 mix; ■, TA98 with S9 mix; ◇, YG7132 without S9 mix and ◆, YG7132 with S9 mix. The concentrations used in the tests were 0, 0.0125, 0.025, 0.05, 0.1 and 0.2 μg/plate as indicated at the X-axes. Each plot indicates a mean value for the number of revertants on triplicate plates