renal graft biopsy

例句：

1. 1. The kidney transplant biopsy revealed a rare genetic disorder.
   肾脏移植活检显示了一种罕见的遗传性疾病。
2. 2.The patient underwent a renal graft biopsy to determine the cause of their chronic kidney disease.
   患者接受了肾移植活检以确定其慢性肾病的原因。
3. 3. The procedure involves taking a small sample of tissue from the patient's kidney for further analysis.
   该过程涉及从患者的肾脏中取一小份组织进行进一步分析。