The major histocompatibility complex (MHC) associates not only with the transplantation rejection reactions, but also with immunological responses in a variety of pathological processes.

• 摘要主要组织相容性复合体(MHC)不仅与移植排斥有关，而且广泛参与免疫应答的诱导和调节，所以具有很重要的免疫学意义。