Abstract
Summary
Maintenance of hypophysecto-mized rats on a diet deficient in iodine resulted in 1) an apparent increase in the efficiency of iodine extraction from the blood by the thyroid gland; 2) no reduction in thyroid gland iodine content and, 3) a slight and questionably significant increase in thyroid acinar cell height accompanied by other morphological manifestations of increased activity. It is suggested that hypophyseal thyrotropin is not the only factor capable of stimulating the thyroid gland.
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