LAGUNA DESIGN / SCIENCE PHOTO LIBRARY LAGUNA DESIGN / SCIENCE PHOTO LIBRARY
Thyroxine hormone molecule. Computer model showing the structure of the hormone thyroxine (T4). Atoms are colour-coded (carbon: dark grey, hydrogen: light grey, oxygen: red, nitrogen: blue, and iodine: purple). Thyroxine is the main hormone produced by the follicular cells of the thyroid gland and is involved in controlling the rate of metabolic processes in the body and influencing physical development.
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