The tooth also had all the components of normal teeth, including enamel, crown and root, and connective fibers to fix it to bone.

培育的牙齿还具备正常牙齿的所有组成成分，包括釉质、齿冠和牙根，以及使其固定于骨头的结缔组织纤维。

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The matrix of bone contains both fibers of the protein collagen and mineral deposits.

硬骨的基质既含有蛋白质的胶原纤维，也含有矿物质沉积。

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The matrix of bone contains both fibers of the protein collagen and mineral deposits .

硬骨的基质既含有蛋白质的胶原纤维，也含有矿物质沉积。

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Macchiarini performed the nine-hour operation on April 9 at the Children's Hospital of Illinois after carefully creating the windpipe using stem cells from Hannah's bone marrow that were saturated over a matrix of plastic fibers shaped into a tube.

CNN: Toddler gets new windpipe from her own stem cells