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Department of Biochemistry, University of Wisconsin, Madison
The elimination of fluorine from the femur of the young female rat fed a fluoride-containing diet has been studied.
It was found that the total fluorine in the femur of such a young rat was reduced approximately 44% during the first 8 weeks after the period of high fluoride intake. The residual fluorine in the femur was not further reduced appreciably or changed after this initial drop at the end of 8 weeks. There-after it remained fairly constant for the additional observation period of 24 weeks. Control animals which were not fed a high fluoride ration but which subsisted on a diet containing only three to 5 p.p.m. of fluorine continued to store this element in the femur during the entire observation period of 32 weeks.
Manuscript received 16 June 1953.