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气道炎症是哮喘发病的重要因素,但研究较为困难,直接检查炎症反应有助于了解哮喘的发病机制和改善治疗。痰不总是自发产生,当不能获取自生痰
Airway inflammation is an important factor in the pathogenesis of asthma, but the study is more difficult. The direct examination of the inflammatory response helps to understand the pathogenesis of asthma and improve the treatment. Sputum does not always spontaneously develop when it can not get its own sputum