#thyroid_hormone  any of several closely related compounds that are produced by the thyroid gland and are active metabolically
  supertype:  hormone__internalsecretion  an endocrine secretion that is transmitted by the blood to the tissue on which it has a specific effect
  subtype:  calcitonin__thyrocalcitonin  thyroid hormone that tends to lower the level of calcium in the blood plasma and inhibit resorption of bone
  subtype:  thyroxine__thyroxin__tetraiodothyronine__T  hormone produced by the thyroid glands to regulate metabolism by controlling the rate of oxidation in cells; "thyroxine is 65% iodine"
  subtype:  triiodothyronine__liothyronine__T  thyroid hormone similar to thyroxine but with one less iodine atom per molecule and produced in smaller quantity; exerts the same biological effects as thyroxine but is more potent and briefer

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