12.如图1为特异性免疫的有关过程.请据图分析回答问题1请写出下列标号的细胞名称�造血干细胞�b细胞.2物质Ⅰ的化学本质是蛋白质 Template




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tomski12.如图1为特异性免疫的有关过程.请据图分析回答问题1请写出下列标号的细胞名称�造血干细胞�b细胞.2物质Ⅰ的化学本质是蛋白质 coloring