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When a iodides in the follicle epithelial cells of the thyroid gland the iodine ions under the influence of the enzyme peroxidase oxidize iodide to form elemental iodine, which is incorporated into the molecule of tyrosine. Thus one part of tyrosine radicals iodized thyroglobulin, thereby forming thyronine, the main ones are thyroxine (T4) and buy…