NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 8,029 terms related to cancer and medicine.

A hormone that is made by the thyroid gland and contains iodine. Thyroxine increases the rate of chemical reactions in cells and helps control growth and development. Thyroxine can also be made in the laboratory and is used to treat thyroid disorders. Also called L-3,5,5’-tetraiodothyronine, T4, and thyroxin.