triiodothyronine
- n 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
- Even in minute quantities, triiodothyronine made a marked difference in 14 patients (one showed no response, and nine others showed slight changes, usually a decrease in .
- Noting that patients with overactive thyroids seemed to suffer less radiation injury, they tried a synthetic thyroid hormone product, triiodothyronine.