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Polysulfide production (SSP4 fluorescence) in buffer by 30 μM EGCG is concentration-dependently elevated by increasing H2S concentrations (A), whereas there is no concentration-dependent effect with 30 μM H2S and varying EGCG concentrations (B). Mean ± SE, n = 4 wells per treatment; error bars may be hidden by symbols. Bar graphs show effects at 90 min incubation with SSP4.
