下列关于体液免疫的叙述正确的是a有的抗原可以直接刺激b细胞使其增殖分化成浆细胞b抗体是由b细胞分泌的c进行细胞免疫时抗原不需经吞噬 Template




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tomski下列关于体液免疫的叙述正确的是a有的抗原可以直接刺激b细胞使其增殖分化成浆细胞b抗体是由b细胞分泌的c进行细胞免疫时抗原不需经吞噬 coloring