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Stimulation of gliding movements in M. xanthus ΔcglB strain ASX1. For details of the stimulation assay, see Materials and Methods. Donor and recipient cells were mixed, and droplets were placed on CTT (1.5%) agar plates. After 5 h of incubation, edges of the droplets were examined by microscopy. Donor strains were DK3685 (A), ASX36 (B), and ASX34 (C). Bars indicate 20 μm.
