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Figure 5 | Virology Journal

Figure 5

From: Comparative pathology of pigs infected with Korean H1N1, H1N2, or H3N2 swine influenza A viruses

Figure 5

Localization of influenza A virus antigens in the lungs of pigs with H1N1, H1N2, and H3N2 infection. Influenza A virus antigens (red stain) were observed in bronchiolar epithelial cells and alveolar macrophage-like mononuclear cells within mildly to moderately thickened alveolar septa at PID 4. At the late stage of infection (PID 14), influenza virus antigens (solid-headed arrow) were observed in H1N1-infected pigs but not for H1N2 and H3N2-infected pigs.

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