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The effect of the crsA47 mutation on expression of spo0F. β-Galactosidase activities in strains carrying spo0F-lacZ fusions were measured as described in Materials and Methods. T0 represents the onset of sporulation. Strains contained the wild-type ςA gene (JH12862; squares) or the crsA47 mutation (GBS105; diamonds) and were grown in either SSM (open symbols) or SSMG (filled symbols).
