Virulence of the P. aeruginosa qscR mutant in
fruit flies. Death of flies over time when fed P.
aeruginosa PAO1 (□), PAOR3 (▴), or
E. coli CM830 (○). The values are the
averages from 10 replicate experiments, each with 9–12 flies, and the
SEM is shown for each value plotted. The parent and mutant bacteria
survived equally well in the dry culture vials during the course of the
experiments (data not shown). The number of bacteria recovered from
flies just after death was 12 (± an SEM of 2) × 106
PAO1, and 8 (±3) × 106 PAOR3.