Fig. 5.
Optimization of arsenic detection conditions. (a) Induction coefficient (IC) in response to arsenite in LB and M9 supplemented medium. (Temperature: 30 °C; cell density: OD600 = 0.2; induction time: 4 h) (b) IC in response to arsenite at different temperatures. (Medium: M9 supplemented medium; cell density: OD600 = 0.2; induction time: 4 h) (c) IC in response to arsenite under different cell densities. (Medium: M9 supplemented medium; temperature: 30 °C; induction time: 4 h. Values are means and standard deviations obtained from experiments with three biological replicates.)