Result RANK positive signals were observed on the odontoclasts in the absorbed lacunae of deciduous teeth roots and osteoclasts in the alveolar bone near.

• 结果RANK的阳性信号出现在乳牙根吸收面的破牙细胞和接近牙胚的牙槽骨陷窝中的破骨细胞、恒牙胚的成牙本质细胞和前期牙本质中。