MiR-30a-3p decreases the expression of chemokines and Th2 cytokines. (a and c) The expression of miR-30a-3p was determined using qRT-PCR. (b and d) The CCR3 gene expression in different groups was determined using qRT-PCR. The secretion levels of (e) OVA-specific IgE, (f) IL-4, (g) IL-5 and (h) eotaxin-1 were determined using ELISA assay. Th2, type 2; CCR3, CC chemokine receptor 3; OVA, ovalbumin.