Effect of Thyroid Activity onin VitroBone Calcium Exchange

Abstract
Rats fed thiouracil or thyroxine for 7 months were used to study the effect of altered thyroid activity on in vitro bone calcium exchange. A significant elevation of calcium exchange was produced in the thiouracil-fed rats, while a decreased calcium exchange was caused by thyroxine. The significance of these findings in relation to parathyroid activity was discussed.