IgE是一种血清含量极少的免疫球蛋白,其含量增高可引起Ⅰ型变态反应性疾病。呼吸道的浆细胞是血清IgE的主要来源之一,并且在Ⅰ型变态反应中与lgE相互作用的肥大细胞也多分布于呼吸道。因此,测定血清IgE含量有助于外源性和内源性哮喘的鉴别,对支气管哮喘和慢性喘息型支气管炎的鉴别也有一定的参考价值。为此,我们用反向被动血凝法对支气管哮喘、喘息型支气管炎和单纯性支气管炎患者进行血 IgE is a very low serum immunoglobulin, its content can cause type Ⅰ allergic diseases. Respiratory plasma cells are one of the major sources of serum IgE, and mast cells that interact with lgE also predominate in the respiratory tract in type I allergies. Therefore, the determination of serum IgE contribute to the identification of exogenous and endogenous asthma, bronchial asthma and chronic asthmatic bronchitis also have some reference value. To this end, we use reverse passive coagulation of bronchial asthma, asthmatic bronchitis and simple bronchitis in patients with blood