Fig. 5


Lung lesions and immunohistochemistry examination. Representative pictures of gross and microscopic lung lesions and (A) are presented. And the scores of gross lung lesions (B), microscopic lung lesions (C), and PRRSV antigen in the lung (D) were shown as means ± SD (error bars), (ns, p ≥ 0.05; **, p < 0.01; ***, p < 0.001)