Pretreatment using epitope-encapsulating nanoparticles to assess the impact on OVA-induced serological responses and cytokine production in a transgenic OT-II murine model. Figure S4 outlines the experimental animal protocol. (A) Serum anti-OVA IgE and IgG1 antibody titers were determined by ELISA. (B) TH2 cytokine (IL-4, IL-5, and IL-13) levels in the BALF, determined by ELISA. (C) Differential eosinophil, neutrophil, and macrophage cell counts on BALF. (D) TGF-β, IL-10 and INF-γ levels in the BALF, determined by ELISA. Data are expressed as the mean ± SEM. *p < 0.05; **p < 0.01; ***p < 0.001 (one-way ANOVA followed by a Tukey’s test).