Thyroxine plays a crucial role in heart and digestive function, metabolism, brain development, bone health and muscle control. 3D illustration. Thyroxine is the main hormone secreted into the bloodstream by the thyroid gland.

Royalty-Free Standard Licenses are granted for worldwide, non-exclusive and perpetual use, unless specifically noted otherwise. All Royalty-Free transactions are final. The Royalty-Free Standard license has no limitations and covers 1 user.