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Motility of Psl/Pel-inducible strains WFPA801, WFPA831, and WFPA833 at various concentrations of arabinose (inducer). (A) Swarming patterns at 0 to 0.5% arabinose. (B) Swimming zones at 0 or 1% arabinose. (C) Twitching zones at 0 or 1% arabinose. The values in the images are the diameters of the corresponding swimming or twitching zones. PAO1 ΔfliC and PAO ΔpilA were used as negative controls for swimming and twitching motility, respectively.
