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Table 1 Histopathological findings in the challenged pigs

From: Experimental infection of a newly emerging Korean type I porcine reproductive and respiratory syndrome virus isolate in colostrum-deprived pigs

DPC* Type Pathological findings†
   Lung Inguinal Lymph Nodes Heart
14 I Moderate focal/multifocal bronchointerstitial pneumonia (3/3) Lymphadenopathy (3/3) Mild multifocal perivascular lymphohistiocytic myocarditis (1/3)
  II Moderate diffuse/multifocal bronchointerstitial pneumonia (2/3) Lymphadenopathy (3/3) Mild multifocal perivascular lymphohistiocytic myocarditis. (3/3)
  Control No lesions (2/2) No lesions (2/2) No lesions (2/2)
21 I Moderate diffuse interstitial pneumonia (2/2), moderate peribronchiolar and perivascular lymphohistiocytic cuffing (2/2) Lymphadenopathy (2/2) Mild multifocal perivascular lymphohistiocytic myocarditis (1/2)
  II Mild to moderate diffuse interstitial pneumonia (2/2), severe peribronchiolar and perivascular lymphohistiocytic cuffing (1/2) Lymphadenopathy (2/2) Very mild multifocal perivascular lymphohistiocytic myocarditis (1/2)
  Control No lesions (1/1) No lesions (1/1) No lesions (1/1)
  1. * days post challenge
  2. † No lesions were observed in liver, spleen, kidney and ileum.