<unk> , also called thyroperoxidase <unk>  or iodide<unk> , is an enzyme expressed mainly in the<unk>  where it is secreted into colloid.<unk>  oxidizes iodide ions to form iodine atoms for addition onto tyrosine residues on thyroglobulin for the production of thyroxine (T4) or triiodothyronine (T3), the<unk>  hormones. In humans, thyroperoxidase is encoded by the<unk>  gene.
Thyroid peroxidase
Alpha-fetoprotein
Parathyroid hormone-related protein
Parathyroid hormone
Thyroglobulin
Mammaglobin
Androgen prohormone
Carcinoembryonic antigen