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Florida Agricultural Experiment Station, Gainesville
The metabolism of P32 and Mo99 was studied in mature rats which were consuming normal and high calcium diets. A decreased urinary excretion and increased tissue deposition of P32 demonstrated a significant retention of phosphorus when the intake of calcium was high. Metabolism of Mo99 was not changed by the increase in dietary calcium. The rapid elimination of molybdenum by way of the urine was demonstrated, 50% of the oral dose being excreted by 12 hours.
2 Supported in part by a grant from the Nutrition Foundation, Inc., New York, N.Y.
Manuscript received 19 August 1954.