Fig. 2
From: Combined immunization with inactivated vaccine reduces the dose of live B. abortus A19 vaccine

Antibody and cytokine quantification of the vaccinated mice. Mouse serum was harvested at 1, 2, 3, 5, and 7 weeks post-inoculation from mice infected with high-dose live, low-dose live, low-dose live + inactivated, and inactivated Brucella, and a control group. Amounts of Brucella-specific IgG (A), interferon-gamma (IFN-γ) (B) and interleukin-4 (IL-4) (C) were quantified by enzyme-linked immunosorbent assays (ELISA). Each data point (n = 6) is the mean ± the standard error of the mean