Thyroid,LM

Bildnummer 12098242
Thyroid,LM
Thyroid gland. Light micrograph (LM) of a thyroid gland showing the follicles. The follicles are lined by a single layer of cuboidal epithelial cells (orange),which synthesise 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 (red),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. Magnification: x800 when printed 10cm wide
Lizenzart: Lizenzfrei
Credit: Science Photo Library / Gschmeissner, Steve
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