Fig. 2
From: The effects of different velogenic NDV infections on the chicken bursa of Fabricius
The nitric oxide content in the bursa of 3-week-old chicken infected with NDV AF2240 and IBS002 at day 1, 3 and 4 post infection. Significant differences were observed using two-ways ANOVA by using strains of NDV and infection time points as effectors. Asterisk signs show significant difference between different strains of NDV (P ≤ 0.05) while different alphabets show significant difference between different infection time points (P ≤ 0.05)