Fig. 2 Extent of As(V) reduction as a function of optical density in serum bottles inoculated with either CN-0 or CN-8. Data for symbols connected by dashed lines were collected after the growth phase (Fig. 1). Experiments with initial As(V) concentrations of 600 µM were conducted in duplicate and error bars denote one standard deviation about the mean. Error bars smaller than symbols are not shown. As(V) reduced (%) = 100[1 - (As_V/As_T)]

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