THE BIOLOGICAL ACTIVITY OF O-METHYL THYROXINE1
- 1 November 1955
- journal article
- research article
- Published by The Endocrine Society in Endocrinology
- Vol. 57 (5) , 566-570
- https://doi.org/10.1210/endo-57-5-566
Abstract
O-Methyl-DL-thyroxine was approximately twice as active as DL-thyroxine in causing tail shrinkage in R. clamitans tadpoles. It was 1/3 as effective as DL-thyroxine in stimulating O2 consumption of rats but was only slightly active in preventing thyroid enlargement of thiouracil-fed rats. Thiouracil feeding did not prevent the effect of O-methyl thyroxine on basal metabolic rate of rats.Keywords
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