Abstract
SINGER (1) AND BARRIE (2) have presented data which indicated that vitamin-Edeficiency has an influence on the histology of the thyroid gland. The former described a hypoplasia of the thyroid of 12 to 18-month E-deficient female rats, and the latter a hypoplasia of the thyroid of both E-low mothers and young born to them. The results of Singer and Barrie have been questioned by Telford, Emerson and Evans (3), who reported that they could find no evidence of hypothyroidism in E-low female rates or in young born to them. We have previously reported (4) that the weight of the thyroids of male rats deficient in vitamin E for 6 months or more was approximately twice that of normal controls, whereas the weight of thyroids from female E-deficient rats was not significantly different from that of normals in any of the age groups studied
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