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ectodermal
Tooth is a typical epithelium-mesenchyme organ, which is formed through the mutual function between the original oral epithelium and epiblastic mesenchyme from the neural crest below.
牙齿是典型的上皮-间充质器官，由原口腔上皮和其下方的神经嵴来源的外胚间充质相互作用而形成。
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