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第Ⅰ型变态反应是机体的超敏感性反应,又故称速发型、休克型、反应素型变态反应。引起人类过敏反应的外因条件是多方面的。如异种动物血清(T、A、T,白喉抗毒素,抗淋巴细胞血清);生物提取物(花粉提取物、胰岛素、肝素、脑垂体后叶提取物等);化学药物(抗菌素类、磺胺类、巴比妥类、麻醉药物等);食品类(肉、鱼、乳、蛋、虾、蟹等);各种生物制品(菌苗,疫苗、胎盘丙种球蛋白);等等。按盖尔(Gell)和库姆斯(Coombs)命名法:凡能引起变态反应的物质统称变应原。
The first type of allergic reaction is the body’s hypersensitivity reaction, so it said rapid onset, shock, reactive prime allergy. External conditions that cause allergic reactions in humans are manifold. (T, A, T, diphtheria antitoxin, anti-lymphocyte serum); biological extracts (pollen extract, insulin, heparin, Barbiturates, narcotic drugs, etc.); foods (meat, fish, milk, eggs, shrimp, crabs, etc.); various biological products (bacterins, vaccines, placental gamma globulin); According to Gell and Coombs nomenclature: Who can cause allergic substances collectively referred to allergens.