Cytokines (IL-4, IL-13, IL-8, and TNF-α) in BALF were measured using ELISA (n=9 per group). *, OVA group vs. Normal group, P<0.001; #, NU7441 group vs. OVA + vehicle group, P<0.001. OVA, ovalbumin; BALF, bronchoalveolar lavage fluid; ELISA, enzyme linked immunosorbent assay.