例句與造句

1. This is due to the failure of the Hertwig epithelial root sheath which maps the shape of the forming tooth roots during active differentiation.
2. The "'Hertwig epithelial root sheath "'( HERS ) or "'epithelial root sheath "'is a proliferation of differentiation of odontoblasts from the dental papilla.
3. It's difficult to find hertwig epithelial root sheath in a sentence. 用hertwig epithelial root sheath造句挺難的