下图表示人体通过体液免疫消灭破伤风杆菌外毒素的过程下列相关叙述错误的是a.细胞2细胞3均起源于造血干细胞b.仅细胞4中含有合成物质a的基因 Template




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tomski下图表示人体通过体液免疫消灭破伤风杆菌外毒素的过程下列相关叙述错误的是a.细胞2细胞3均起源于造血干细胞b.仅细胞4中含有合成物质a的基因 coloring