Figure 6. Increasing BosR expression shuts off OspA production only when other Osps, OspC, DbpA and DbpB, are constitutively expressed.

The ΔrpoS, ΔrpoS/bosR’ and ΔrpoS/C’B’A’-bosR’ were grown to late log phase (10⁸ cells/ml), harvested and analyzed either by immunoblotting probed with FlaB, BosR, OspC, DbpA and DbpB antibodies (A), or Coomassie staining (B).