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. 2014 May 9;122(8):817–822. doi: 10.1289/ehp.1307759

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Sulfate-reducing activity (H₂S production) (A) and MMMTA^V formation (B) in enriched SRB (with and without sodium molybdate, the SRB inhibitor), nonenriched SRB, and abiotic (sterilized) cultures during 48 hr of incubation with MMA^V (0.5 mg/L). *p < 0.05, and **p < 0.01, by one-way ANOVA. ^#p < 0.05, and ^##p < 0.01, by two-case t-test based on nonenriched SRB (intermediary group).