TABLE 6.
Strain | Infecting dose (no. of CFU [106] in 5 μl) | Median final viable count (CFU/ml) (lower quartile-upper quartile) |
---|---|---|
PA103 | 2.3 | 2.40 × 107 (2.00 × 107-2.85 × 107) |
retS mutant | 3.3 | 2.55 × 105 (1.55 × 105-4.80 × 105)a |
exoU mutant | 2.5 | 2.75 × 107 (0.77 × 107-3.90 × 107) |
exoT mutant | 3.0 | 2.25 × 107 (1.55 × 107-2.70 × 107) |
exoUT mutant | 3.1 | 1.65 × 104 (0.79 × 104-1.80 × 104) |
A 15-fold increase in colonization by retS over that by the exoU exoT double mutant (P < 0.05, Mann-Whitney test).