Figure 3
From: Regions of Diversity 8, 9 and 13 contribute to Streptococcus pneumoniae virulence
Percent 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.