Hertwig epithelial root sheath

例句：

1. 1. The histological examination revealed that the tumor was located in the Hertwig's epithelial root sheath.
   组织学检查显示，肿瘤位于赫维克表皮根鞘。
2. 2.The pathologist identified the cells as belonging to the Hertwig's epithelial root sheath lineage.
   病理学家鉴定这些细胞属于赫维克表皮根鞘谱系。
3. 3. The research focused on the role of the Hertwig's epithelial root sheath in tissue regeneration.
   该研究专注于赫维克表皮根鞘在组织再生中的作用。