In kidney transplantation, immunosuppressants are being used to relax all immunological constraints, allowing patients to receive transplants from biologically incompatible donors. We propose an efficient way of using immunosuppressants in combination with a kidney exchange program. We introduce the top-trading cycles and chains solution, a modification of the top-trading cycles rule for the standard kidney exchange problem, and investigate its properties.

中文翻译：

---

与免疫抑制剂进行肾脏交换的顶级交易周期和链解决方案

在肾移植中，免疫抑制剂被用来放松所有免疫限制，允许患者接受来自生物学不相容的供体的移植物。我们提出了一种结合肾脏交换计划使用免疫抑制剂的有效方法。我们介绍了顶级交易周期和链解决方案，这是标准肾脏交换问题的顶级交易周期规则的修改，并研究了它的性质。