| The pathogenesis of it has not clearly discovered. And it is considered that asthma is a chronic inflammatory disease of the lung that is characterized by heightened sensitivity to stimuli that induce bronchoconstriction (airway hyper-responsiveness or AHR), marked tissue eosinophilia, increased mucus production due to the increased differentiation of bronchial epithelium into mucus-producing goblet cells and prominent structural changes in the airways.and it's a kind of complex allergic disorders caused by various of non-specificity or specificity allergens. Allergic asthma is a chronic inflammatory disease associated with a predominant Th2...
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