To clone and express surface antigen SAG4 gene of Toxoplasma gondii, and analyze its immunoreactivity.

目的 对弓形虫表面抗原SAG4基因进行克隆、表达和免疫反应性分析。

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Objective:To construct a recombinant plasmid containing rhoptry protein 2(ROP2)gene of Toxoplasma gondii and express it in E. coli for selection of diagnostic antigen and vaccine candidate.

目的：构建弓形虫棒状体蛋白（ROP2 ）基因重组质粒并在大肠杆菌中表达，用于筛选弓形虫新的诊断抗原和疫苗分子。

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