Fig. (6) Dependence of mutant motility phenotypes on IPTG. Motility mutants KV7432 and KV7433 were grown at 28°C in TB-SW motility medium containing the indicated concentrations of IPTG. The average diameter of migration of triplicate samples after 5 hours is shown. Standard deviation is indicated by error bars. Error bars smaller than the plotted points are occluded by the points and not visible.