IL4 and allergic asthma: ⬇ Ovalbumin-induced allergic asthma⬇ The infiltration of the inflammatory cells in the airway⬇ Total number of inflammatory cells in the bronchoalveolar lavage fluid (BALF)⬇ The level of lung eosinophil peroxidase and serum OVA-specific IgE⬇ Expression of lung eotaxin, p-ERK, p-JNK and p-p38⬇ IL-4,IL-8 IL-13 and IFN-γ in BALF