器官移植的慢性排斥
Chronic rejection of organ transplantation
以上为机器翻译结果，长、整句建议使用 人工翻译 。
但是数十年来，由于慢性排斥和免疫抑制剂的毒副作用，使得器官移植的长期存活率无明显改善。
However, a constant proportion of organs were lost every year due to chronic allograft rejection and immunosuppressive drug toxicity.
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