噬菌体表面呈现抗人红细胞血型A抗原单链抗体的研究

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目的 构建表达抗人红细胞血型A抗原50A杂交瘤细胞的单链抗体(ScFv)。方法 应用重组噬菌体抗体技术,从50A杂交瘤细胞中分离、构建单链抗体基因,并将其克隆入噬粒pCATNAB5E中,转化E.coli XL-Blue,辅助噬菌体援救构建50A噬菌体单链抗体库;采用完整红细胞亲和富集法淘选阳性重组噬菌体,鉴定重组噬菌体并进行序列测定分析;免疫印迹试验检测重组单链抗体的特异性抗原活性。结果 用M13
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