Asthma is a chronic inflammatory disorder of the airways in which many cells(such as eosinophile,labrocyle,T lymphocyle,neutrophil and airway epithelialis) and cellular elements play a role.

• 支气管哮喘是一种由多种细胞(如嗜酸粒细胞、肥大细胞、T淋巴细胞、中性粒细胞、气道上皮细胞等)和细胞组分参与的气道慢性炎症性疾病。