Because thymic dendritic cells are the potent antigen presenting cells in the thymus, they must play an important role in thymic negative selection.
胸腺树突状细胞作为胸腺内功能强大的抗原呈递细胞，在阴性选择中必定发挥着不可忽视的作用。
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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.