Strontium/Calcium Ratios in Parts of Rat Femur.

Abstract
After intraperitoneal injection of a mixture of Ca45 and Sr89 in the rat, the Sr/Ca Observed Ratio in parts of a long bone, the femur, was obtained 15 minutes to 48 hours after injection. A maximal Sr content appeared in bone within 30 minutes, with the shaft showing discrimination against Ca; during the next 48 hours the Observed Ratios fell but remained consistently higher in shaft portions of the bone. Data on blood Sr/Ca ratios are also presented.

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