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. 2001 Dec;69(12):7254–7261. doi: 10.1128/IAI.69.12.7254-7261.2001

FIG. 2.

FIG. 2

Graphical representation of COI analysis of strains carrying mutations in both phoP and genes encoding structural components of the SPI-2 TTSS. (A) Analysis of phoP ssaV double mutant strain (HH121) in mixed infections with either phoP or ssaV single mutant strains (HH114 and HH109, respectively). (B) Analysis of phoP ssaJ double mutant strain (HH175) in mixed infections with either phoP or ssaJ single mutant strains (HH114 and P11D10, respectively). (C) Analysis of phoP sseB double mutant strain (HH176) in mixed infections with either phoP or sseB single mutant strains (HH114 and HH102, respectively). The indices represented are CI (white bars) and COI (black bars). The strains used in each mixed infection are represented by the relevant mutations for simplicity and are indicated under the corresponding bar. COIs are compared to 1.0 (indicated by a horizontal dotted line) and to the value of the CI relevant in each case. COIs are significantly different from 1.0 and from the corresponding CIs (P ≤ 0.05). wt, wild type.