Also ideal would be a tolerance that endures as a permanent state of affairs, without need for immunosuppressive drugs, which can have many side effects.

• 最理想的情形是，接受移植者对移植器官的耐受性，就像对自身组织一样，而且这种耐受性最好是持续的、无需服用会引发许多副作用的免疫抑制药物。