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Bactericidal activities of silver zeolite and silver nitrate at 37°C. (A) Cells were treated with silver zeolite at 0 (□), 10 (⋄), 30 (▵), and 100 (○) mg/ml in 20 mM potassium phosphate buffer (pH 7.0). (B) Cells were treated with silver nitrate at 0.5 (□), 1.0 (○), and 2.0 (▵) mg/ml in 20 mM HEPES-NaOH buffer (pH 7.0).
