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(A) Swarming of MKM11 (ΔfliH) and pseudorevertants MMA1002 (ΔfliH flhA*) and MMB1005 (ΔfliH flhB*). (B) Swarming of SJW1103 (wild type) and second-site mutants MMA1102 (flhA*) and MMB1105 (flhB*). The plates were incubated at 30°C for the times indicated.
