Fig. 6

Indirect ELISA analysis of sera collected from rabbits immunized with recombinant rBoSBP4. Sera were tested at a 1:100 dilution. The X-axis represents the serum collection point: 0 = pre-immune serum; 1–4 = post-immunization bleeds collected after each successive round of immunization. The data are presented as the means, and the statistical analysis revealed a significant difference (**: p < 0.01).