Arnino Acid Transport by Rat Parathyroid Glands in vivo: Effect of Low Calcium Diet.

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.