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Comparison of A(H3N2)v influenza virus titers recovered from ferret tissues. Three ferrets were inoculated by the i.n. route with 106 pfu of IN/11 virus (A), MN/10 virus (B), PA/10 virus (C), or KS/09 virus (D), and tissues were collected 3 dpi. Titers are expressed as log10 pfu per gram of tissue; the limit of detection was 1.0 log10 pfu/g or mL. Nasal turbinate virus titers are expressed as log10 pfu/mL Each bar represents one ferret.
