London, United Kingdom
Photograph - Photograph
Thyroid follicles. Computer artwork of cells of thyroid follicles (pink, purple) superimposed on an artwork of the thyroid gland (red, centre). A thyroid follicle consists of a layer of epithelial cells (purple) around a central storage chamber (spaces). The cells produce the thyroid hormones tri-iodothyronin (T3) and thyroxine (T4) and secrete them into the central chamber where they are stored as the glycoprotein thyroid colloid (red). Thyroid hormones regulate the body's metabolism.
May 1st, 2013
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