分化群抗原 cluster of differentiation: 分化抗原簇differentiation antigen: 分化抗原,鉴别抗原differentiation of antigen: 抗原鉴别cluster of differentiation system: cd系统,分化群系统b cell differentiation antigen: b细胞分化抗原下载手机词典可随时随地查词查翻译