After growing them, they found their structures had matured into the components that make teeth, including dentin, enamel, dental pulp, blood vessels, and periodontal ligaments.
这些细胞长成后，研究人员发现它们的结构已经分化成熟为各种成分并形成了牙本质、釉质、牙髓、血管及牙周韧带。
Thirty weeks later two-millimeter-wide molar crowns emerged complete with pulp chambers root tips and bonelike layers of dentin and in a first enamel.
周后，冒出了两公厘宽的臼齿牙冠，具有牙髓腔、牙根的根尖、一层如骨骼般的象牙质，以及最基本的珐琅质。
After growing them they found their structures had matured into the components that make teeth including dentin enamel dental pulp blood vessels and periodontal ligaments.
这些细胞长成后，研究人员发现它们的结构已经分化成熟为各种成分并形成了牙本质、釉质、牙髓、血管及牙周韧带。
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