Extended Data Fig. 7: Mucosal immune responses induced by PROTAR vaccines in adult mice.

Titers of IgA antibodies against whole influenza virions (a), HA (b), NA (c), and NP (d) in bronchoalveolar lavage (BAL) of C57BL/6 J mice at day 21 post-vaccination with 105 TCID50 of indicated vaccines (n = 5 mice per group). Data are shown as means ± s.d.; one-way ANOVA with Dunnett’s multiple comparisons test; black P values indicate the statistical comparison to Vehicle group; orange P values indicate the statistical comparison to IIV group; blue P values indicate the statistical comparison to CAIV group; red P values indicate the statistical comparison to M1-PTD.