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The ΔluxS mutant has a motility defect that is rescued by wild-type CFS. Wild-type, ΔluxS, and luxS* bacteria were seeded onto soft agar plates composed of normal medium or supplemented with CFS from wild-type or ΔluxS cultures. After 6 days of incubation, the halos of migration were visualized (A) and quantified (B). Error bars indicate the standard deviation of halo sizes of triplicate cultures in one experiment.
