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T 细胞亚群在不同的病毒、细菌和寄生虫感染中起不同作用。不同病原体可诱导产生不同T 细胞亚群参与免疫应答。同一病原体对不同的感染对象以及在感染的不同阶段或在同一阶段对不同的免疫器官均可激发不同的T 细胞亚群发生免疫应答。不同T 细胞亚群在抗感染中的作用与某些细胞因子产生密切相关,前者的分化又受到后者的调节。
T cell subsets play different roles in different viral, bacterial and parasitic infections. Different pathogens can induce different T cell subsets to participate in the immune response. The same pathogen can have an immune response to different infectious agents and different T cell subsets that can be excited by different immune organs at different stages of infection or at the same stage. The role of different T cell subsets in anti-infectives is closely related to the production of certain cytokines, and the former is regulated by the latter.