EFFECT OF ESTRONE AND DIETHYLSTILBESTROL ON GROWTH RATE OF RATS AND ON IODINE CONTENT OF THYROIDS

Abstract
The adm. of estrone and diethylstilbestrol over long periods of time retards significantly the growth of rats kept on diets deficient in I as well as when adequate I is available. The toxic properties of diethylstilbestrol are more pronounced than estrone when given in estrogenically equivalent doses. Toxic manifestations are more accentuated in animals on an I deficient diet than on a normal diet. Both diethylstilbestrol and estrone cause significant depression of the I content of the thyroids of rats kept on an I deficient diet.