牙胚
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tooth bud cells
牙芽细胞
以上为机器翻译结果，长、整句建议使用 人工翻译 。
In this case the cells were taken from what is known as the tooth germ, the little bud that appears before an animal grows a tooth.
在这一研究中，这些细胞来源于所谓的牙胚即动物出牙前发生的幼芽。
youdao
Tooth enamel begins to form in the human embryo when a specialised layer of cells, called ameloblasts, in the embryonic tooth bud secretes amelogenin proteins.
BBC: By BBC News Online Science Editor Dr David Whitehouse
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