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Transcription analysis of the rapF (A) and phrF (B) promoters. Strains carrying the rapF-lacZ fusion construct pRapF32B or the phrF-lacZ plasmid pRapF38 were grown in Schaeffer's sporulation medium and assayed as described in Materials and Methods. A. -•-, JH12981 wild type; -▪-, JH11224 comP; -▴-, JH11223 comA. B. -□-, JH11507 wild type; -♦-, JH23066, spo0A; -•-, JH23069 spo0H; -▵, JH23068 abrB; -▾-, JH23067 spo0A abrB, -▴-, JH19163 (rapFphrF-lacZ).
