Abstract
Summary
Active transport of α-aminoisobutyric acid by rat parathyroid tissue was much greater than by thyroid tissue under control conditions. Calcium deprivation doubled the parathyroid weight and tripled the α-aminoisobutyric acid transport into parathyroid cells, but had no effect on thyroid cells. The magnitude of this transport phenomenon is apparently a measure of physiologic activity of the parathyroid glands.
The authors are indebted to Miss Ethel Hoffeins and Mrs. Joaquina Greene for technical assistance.
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