Instead the third molar tooth buds that provided cells to seed the scaffolds might have contained hidden stem cells ? potent progenitors of other cell types ? that were responsible for forming the new tissue 也许，提供细胞接种在支架上的第三臼齿牙胚，可能含有看不见而负责形成新组织的干细胞（可以生成其他种类细胞的前驱细胞） 。
