Competitive index (CI) analysis of WT and Δ<i>srr1</i> mutant obtained in the rat model of endocarditis.

<p>Competition index (CI) was calculated as the ratio of the WT to the Δ<i>srr1</i> mutant in each tissue, normalized for the ratio of strains within the inoculum. Circles represent data from individual animals. A CI above 10⁰ (dashed line) indicates a competitive disadvantage of Δ<i>srr1</i> compared with WT. Horizontal black bars indicates means of CIs.