Figure 3

(a) Macrophage invasiveness (CFUs at Day 0) for the five selected variants. Each square represents the mean value of an experiment. Lines and error bars indicate median values ± range. (b) Intramacrophage multiplication ratios (CFUs at Day 4/CFUs at Day 0) for the five selected variants. Each square represents the mean value of an experiment. Lines and error bars indicate median values ± interquartile range. *p < 0.05.