细胞免疫和体液免疫有什么本质区别与联系

2025-04-03 12:58:51
推荐回答(3个)
回答1:

作用对象上看,体液免疫清除的是游离在寄主细胞外的抗原及其产生的有毒物质;细胞免疫则摧毁侵入到寄主细胞内的病毒、胞内寄生菌或外来的组织团块、癌变的细胞等。
从作用方式上看,体液免疫是通过效应b细胞(浆细胞)分泌抗体,并与抗原发生特异性结合来清除抗原;细胞免疫则是通过效应t细胞(杀伤t细胞)分泌穿孔素使靶细胞溶解死亡。

回答2:

细胞免疫和体液免疫有什么本质区别与联系
体液免疫和细胞免疫:在体液免疫中,免疫应答的效应产物为抗体.因为活化的B淋巴细胞分化为浆细胞,浆细胞分泌抗体,抗体主要存在于血清等体液中,故称体液免疫或B细胞介导的体液免疫应答;细胞免疫的效应产物为效应性T细胞,故称细胞免疫或T细胞介导的细胞免疫应答.

回答3:

体液免疫和细胞免疫的产生都分为感应、反应和效应三个阶段。都属于特异性免疫。
细胞免疫的主体是T淋巴细胞,作用机制包括两个方面:
1.致敏T细胞(效应T细胞)的直接杀伤作用。
2.通过淋巴因子相互配合、协同杀伤靶细胞。
体液免疫的主体是B淋巴细胞,作用分为三步:
1.B细胞产生浆细胞和记忆细胞
2.浆细胞产生抗体
3.记忆细胞与二次免疫反应

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