These chronic exposures failed to produce any measurable changes in the general appearance, appearance of teeth, activity, growth, mortality, blood, serum chemistry, or fluorine content of the teeth and bones of the rats tested.

• 这些长时间的暴露没有在被测试老鼠的总体外观、牙齿外观、活动性、生长、死亡率、血液、血清化学性质或牙齿和骨骼的氟含量方面产生任何可测量的变化。