Fig. 4

A graph showing the comparative specific activities of constitutively (0 µM) and inducibly expressed chromate reductase (induced with 25 µM, 50 µM, and 100 µM chromate) in the presence of three different electron donors (NADH, GSH, and D-glucose). The asterisks denote statistically significant differences (increasing number of asterisks denotes increased significance) in chromate reductase specific activities at different conditions (connected by blue lines). The error bars represent the standard error of the mean.