英语词汇“hertwig root sheath”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	hertwig root sheath
释义	Hertwig root sheath Hertwig root sheath (hert′wig, ′vik) [Wilhelm August Oscar Hertwig, Ger. physiologist, 1849–1922] A downgrowth of epithelium from the cervical loop of the enamel organ that induces dentin formation of the forming tooth root and determines its shape. The epithelial diaphragm, a horizontal extension of the Hertwig's root sheath, will determine the number and size of the tooth roots.
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Hertwig root sheath