FIG 7.

Scores for lesions in the livers of BALB/c (A) and C57BL/6 (C) mice and the spleens of BALB/c (B) and C57BL/6 (D) mice that were not immunized (inoculated with PBS or sterile alginate, as indicated) or were immunized with nonencapsulated or encapsulated Brucella ovis ΔabcBA and were challenged with wild-type B. ovis. Means were compared with the Kruskal-Wallis nonparametric test. Significant differences between nonimmunized controls (PBS and alginate) and immunized groups are indicated. *, P < 0.05; **, P < 0.01; ***, P < 0.001.