This gland makes its hormones by combining iodine with the amino acid tyrosine
The cells that produce calcitonin, which are called C cells, or parafollicular cells... [DOC] [TLE] Thyroglobulin - Wikipedia [PAR] Thyroglobulin (Tg) is a 660 kDa, dimeric protein produced by the follicular cells of 
the thyroid and used entirely within the thyroid gland.