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. 2004 Sep;72(9):5143–5149. doi: 10.1128/IAI.72.9.5143-5149.2004

FIG. 4.

FIG. 4.

(A) Survival in J774 macrophages of B. abortus mutants carrying marked or unmarked deletions of virB1 or virB2. Data points represent the means of results from three independent experiments performed in triplicate ±standard error of the mean. (B) Complementation of intracellular survival defect of the nonpolar virB2 mutant by knock-in of virB2. Asterisks indicate significant (P < 0.05) differences in numbers of CFU of mutant strains recovered from J774 macrophages compared to the wild type (wt) by Tukey's HSD test following ANOVA.