1、免疫介导机制:细胞毒性 T 细胞异常激活,抑制 CD34+ 造血干细胞,导致造血功能衰竭。Th1/Th2 分化失衡16,调节性 T 细胞(Treg)及自然杀伤细胞(natural killer cell,NK)调节功能不足17-19,Th17、树突状细胞、巨噬细胞异常20-22等过程与再障的发病有关。
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