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识别具有特应性个体的最重要一点是经抗原性物质刺激后,这种人发生持久的IgE反应,正常人绝非如此.IgE结合到细胞表面Fce受休(FceR)上,使肥大细胞
The most important point to recognize an atopic individual is that this person has a persistent IgE response after being stimulated with an antigenic substance, which is not the case in normal humans.IgE binds to the FceR on the cell surface and causes mast cells