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 也許,提供細(xì)胞接種在支架上的第三臼齒牙胚,可能含有看不見而負(fù)責(zé)形成新組織的干細(xì)胞(可以生成其他種類細(xì)胞的前驅(qū)細(xì)胞) 。