Description : Which is the predominant in Thyroid hormone?
Last Answer : Thyroxine, or T4, also called tetraiodothyronine, contains four atoms of iodine. Triiodothyronine, or T3, contains only three atoms of iodine. The more common hormone is T4, which accounts for nearly 90 ... effective. Both hormones have similar functions. Enzymes in the liver can convert T4 to T3.