FIG. 2.

Serologic responses of S19-vaccinated, SRB51-vaccinated, or control elk to gamma-irradiated SRB51 in a dot blot assay after booster vaccination. Elk were vaccinated s.c. with saline, 1.2 × 10¹⁰ CFU of SRB51, or 0.8 × 10¹⁰ CFU of S19 (n = seven animals/treatment) and booster vaccinated 65 weeks later with saline, 1.0 × 10¹⁰ CFU SRB51, or 1.2 × 10¹⁰ CFU S19, respectively. The responses are presented as mean titers ± the SEM. Means with different superscripts are significantly different (P < 0.05).