Figure 2

Re-isolation of G. anatis in immunized or non-immunized birds 48 h after challenge. The growth of G. anatis was scored 0–5: 0 (no colonies), 1 (<10 colonies), 2 (10–200 colonies), 3 (>200 colonies), and 4 (dense/florid growth). The total bacterial load was calculated by summation of all scores. Significant differences (P < 0.05) to the control group are marked with *.