Figure 3From: Regions of Diversity 8, 9 and 13 contribute to Streptococcus pneumoniae virulencePercent survival of mice following challenge with RD deficient S. pneumoniae. Kaplan-Meier plot illustrating survival of mice infected with wild type and RD deficient mutants. Cohorts of 10–11 mice were infected with wild type and the RD mutants. Survival was recorded over a 10 day period. Statistical analysis was performed using a Gehan-Breslow statistic analysis for survival.Back to article page