placental villi

• 胎盘绒毛

placental villi的用法和样例：

例句

1. Placental chorioangioma is the most common benign tumor of placenta.
   摘要胎盘绒毛膜血管瘤是胎盘最常见的良性肿瘤。
2. These results indicate that renin-angiotensin system may exist independently in human placental villi during early pregnancy.
   提示人妊娠早期胎盘绒毛组织可能已存在着独立的肾素一血管紧张素系统。