Abstract
Summary
1. The incorporation of deuterium into cholesterol was studied in rats injected with thyroxine, in normal rats and in thyroidectomized rats. 2. It was observed that thyroxine stimulated, and thyroidectomy depressed, the incorporation of deuterium into cholesterol in the liver, intestine, kidneys and spleen, but not in the lungs. 3. In thyroidectomized rats, a lowering of the environmental temperature by approximately 20-28°C did not alter the rate of incorporation of deuteriuim into cholesterol in the liver.
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