collateral vascular bundle

例句：

1. 1. The surgeon carefully dissectedthe collateral vascular bundles toremove the tumor.
   外科医生小心翼翼地解剖了旁支血管束以切除肿瘤。
2. 2. Thepatient's blood pressure was elevated,and the doctor ordered a collateralvascular bundle angiogram.
   病人的血压升高，医生下令进行旁支血管束血管造影。
3. 3. The researcher discovered thatthe collateral vascular bundles playeda crucial role in the body'simmune response.
   研究者发现旁支血管束在身体免疫系统中起着至关重要的作用。