Fig. 6. Transformation at swarm boundaries can result in recombinants with novel adaptive capabilities.

a Experimental design. Samples were taken from the swarm that spread onto the part of plate containing both antibiotics (Ab): Chloramphenicol (Cm) and Spectinomycin (Sp) (marked with arrows and with circles). b Meeting points of kin (blue) and non-kin (red) strain pairs after 24 h of incubation on 12 cm B media agar plates. See Table 2 for strain abbreviations.