Figure 3From: Comparative expression of Toll-like receptors and inflammatory cytokines in pigs infected with different virulent porcine reproductive and respiratory syndrome virus isolatesPathological examination of lung tissues of pigs from groups HP, LP, LP-der PRRSV and the control group at 15 d.p.i. The tissues were stained with hematoxylin and eosin (magnification, x200).Back to article page