Abstract |
The influence of estradiol on the radioactive calcium
metabolism in blood, bone and young of lactating rats
has been studied. Estrogen, in an amount estimated to
equal that secreted in late pregnancy, was injected
daily into lactating rats for 4 days along with 45Ca.
On the 5th day, radioactivity of blood serum, bone, and
young was compared to a similar group of lactating rats
not treated with estrogen. Average gain in weight of
the litters of the 2 groups was similar. However,
radioactivity in serum and bones of treated with
estradiol was significantly higher than in the
controls. The radioactivity in litters of the 2 groups
was similar. Estrogen plays a role in the retention of
calcium in the animal body.
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