in rats receiving 30 mg/kg of ptu , a decrease of both serum 3,5,3'-triiodothyronine and thyroxine concentrations and of 131i incorporation into the thyroid hormone precursors was observed , together with elevation of serum thyroid-stimulating hormone concentration , an increase in thyroid weight , and hyperplasia of the follicular epithelium of the thyroid gland .
C0040132
thyroid
C1710410
epithelium