Fig. 3From: Changes in RNA secondary structure affect NS1 protein expression during early stage influenza virus infectionInfectious activity of assembled viruses featuring different NS RNA structures after their rescue by the reverse genetics techniqueViruses are: “1–1” - hairpin in regions 1 and 2; “1–0” - hairpin at region 1; “0–1” - hairpin at region 2; and “0–0” - without hairpins. Assembled virus titers were determined 72 h post transfection in Vero cell culture. Error bars represent mean ± s.d (n = 3 in two independent experiments). Differences were analyzed by one-way ANOVA with Tukey’s Multiple Comparison TestBack to article page