Zinc, copper and manganese levels in various tissues following fluoride administration.

Distribution of zinc, copper and manganese has been studied in liver, kidney and bone of rats subjected for 10 months to varied fluoride concentrations in drinking-water. In the liver a significant fall in the levels of Mn, Cu and Zn was registered. In the kidney, the Mn level fell whereas the zinc level increased. In the bone, the copper content fell, whereas the manganese content increased.