1. Dentin matrix protein 1 (DMP1) is expressed in both pulp and odontoblast cells and deletion of the Dmp1 gene leads to defects in odontogenesis and mineralization.
   牙本质基质蛋白-1（DMP1）在牙髓和成牙本质细胞中均有表达，Dmp1基因缺失可导致牙齿发育和矿化障碍。

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