适应性免疫被认为是对具体的细菌，病毒，真菌和寄生虫的反应，而先天免疫一向被认为是身体对所有致病威胁的一般反应。
Whereas adaptive immunity is thought to be a response to specific bacteria, viruses, fungi and parasites, innate immunity has always been seen as the body's general response to all threats of disease.
嗜酸性粒细胞和嗜碱性粒细胞都可以在全身过敏反应和受寄生虫侵袭的组织中看到。
Both eosinophilia and basophilia may be seen in response to systemic allergic reactions and invasion of tissues by parasites.
它们共同作用引发一种免疫反应，在第二次活动前就击退入侵的寄生虫。
Together, these trigger an immune response which can fight off invading parasites before the second act.
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