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Influence of nisin on entianin1–20-mediated PspaS-lacZ induction (A) and of nisin1–20 on entianin-mediated PspaS-lacZ induction (B). The β-galactosidase activities of PspaS-lacZ in reporter strain B6633.MB1 are shown after 60 min of induction. Error bars represent the standard deviation between results for samples from two separate cultures (n = 2); measurements were carried out in duplicate.
