有些大流行性流感疫苗含有佐剂以便减少病毒抗原的使用量(抗原是能够刺激免疫反应的一种物质)。
Some pandemic vaccines contain an adjuvant to reduce the amount of virus antigen to be used (an antigen is a substance capable of stimulating an immune response).
菠萝蜜中的过敏原不会使免疫系统敏感，但是一旦桦树花粉刺激了免疫系统，免疫系统也会对菠萝蜜有反应。
The allergen in jackfruit does not sensitize the immune system, but once birch pollen has done so, the immune system may react to jackfruit too.
182过敏是免疫系统对某种刺激的过度反应。
182allergies are an overreaction of the immune system to certain stimuli.
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