Figure 4.

Strains producing type Ia capsule outcompete strains producing type III capsule independent of genetic background. A and B, Adult nonpregnant C57/BL6J mice were vaginally colonized with a 1:1 mixture of a capsule switch (CS) and revertant (REV) strains, as in Figure 1 (A, n=8; B, n=6). Data points represent geometric mean competition indices and error bars represent 95% confidence intervals. The graph title indicates the strain genetic background (either A909 or COH1), and the right-side labels indicates the expressed serotype (either Ia or III) and either CS or REV to indicate the specific strain type.