母胎免疫耐受的确切机制仍不明了。树突状细胞作为重要的免疫调节细胞,在免疫激活以及免疫耐受中发挥着重要的作用。蜕膜中存在树突状细胞,对蜕膜树突状细胞的表型、亚群、分泌的细胞以及可能的功能研究表明,蜕膜树突状细胞不同于外周血来源的树突状细胞,蜕膜树突状细胞可能参与了妊娠免疫耐受的形成。 The exact mechanism of maternal immune tolerance is still unknown. Dendritic cells, as important immunoregulatory cells, play an important role in immune activation and immune tolerance. Dendritic cells exist in dendritic cells, decidual dendritic cells phenotype, subpopulation, secretion of cells and possible function studies show that dendritic cells is different from peripheral blood-derived dendritic cells, Decidual dendritic cells may be involved in the formation of immune tolerance in pregnancy.