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Effects of forsythoside A on the histological characterization in mice. (a–d) Representative hematoxylin and eosin staining histological sections of all the groups at day 6 ((a) normal con; (b) V con; (c) V Forsythoside A; (d) V oseltamivir group); (e,f) Changes in inflammatory cell counts and degree of edema in pulmonary interstitial. All images obtained at ×200 magnification. Δ p < 0.01 compared with normal con. * p < 0.01 compared with V con.
