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Thyroid Follicles, LM

Thyroid Follicles, LM

C014/4455

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Credit

BIOPHOTO ASSOCIATES / SCIENCE PHOTO LIBRARY BIOPHOTO ASSOCIATES / SCIENCE PHOTO LIBRARY

Caption

Light micrograph of a thyroid gland showing the follicles. The follicles are lined by a single layer of cuboidal epithelial cells (dark purple, dark nuclei), which synthesize and secrete the iodine-containing hormones T3 (tri-iodothyronine) and T4 (thyroxine). The thyroid follicle is filled with a glycoprotein substance called thyroglobulin or thyroid colloid (purple), which is a storage form of the thyroid hormones. When actively secreting hormones the lining cells are large and cuboidal, when less active the follicles are distended and the secretory cells flattened.

Release details

Model release not required. Property release not available.

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