单词primary-dentin
网络: 原发性牙本质；原生牙本质；初生性原生牙本质
ObjectiveDental papilla mesenchymal cells differentiate into primary odontoblasts and form primary dentin during tooth development.
目的在牙齿发育期间，牙乳头间充质细胞分化为成牙本质细胞，形成原发性牙本质；