In vitro arsenic transformation assay
Ability of Bacillus mycoides NR5, of transforming As (V) to As (III) was evaluated by the method of Simeonova et al. (2004). Bacterium grown on nutrient agar plates containing 100 mgL-1 and 20 mgL-1 As(V) and As (III) respectively. After growth agar plates were flooded with 100mM silver nitrate (AgNO3) and placed in dark in incubator.