(C) Brucella replication in BMMs expressing either GFP or GFP-BspF and infected with either wild type (2308), ΔbspF, or complemented ∆bspF (ΔbspF::bspF) bacteria, measured as number of bacteria per cell at 24 h pi. Data are means ± SD of n=3 independent experiments. Grey dots represent values from individual cells analyzed (n>300); black dots indicate means of individual experiments. Asterisks indicate statistically significant differences (P<0.05, two-way ANOVA followed by Dunnett's multiple comparisons test) compared to controls. 