AAD ameliorated Ova-induced inflammatory infiltration in lung tissue of mice. Histologic analysis of the lung sections were performed with HE to visualize inflammatory cell recruitment, representative photomicrographs of lung inflammation expression are shown (A). White arrows indicate areas with clear infiltrated inflammatory cells. With semi-quantitated (score: 0–4) under Olympus microscope (10 × 20 magnification), the level of inflammatory cell infiltration (B) was assessed by two observers independently. Data are presented as means ± SE for 8–10 mice per group. H + OVA: OVA challenged and treated with high dose AAD, L + OVA: OVA challenged and treated with low dose AAD. #p < 0.05 compared with NS. *P < 0.05 compared with OVA group.