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. 2012 Sep 10;109(39):15900–15905. doi: 10.1073/pnas.1205576109

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Fig. 1. — Lung pathology caused by TRSw viruses in inoculated ferrets. Lung of ferrets inoculated with 10^5.5 log₁₀ TCID₅₀/mL of either TRSw H1N2 (Sw/1130 and Sw/1204) or H3N2 (Sw/CY05 and Sw/CY07) viruses were harvested at 7 dpi. (A) Gross morphologic features. (B) Mucopurulent exudates (arrows) were noted in the lungs of Sw/1204-inoculated ferrets. (C) Histopathology in the lungs of ferrets inoculated with SW/1204 was examined by H&E staining (Left, magnification 200×) and by immunostaining with polyclonal NP antibody (Right, magnification 400×). Arrows indicate positive reaction.