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Where are thyroid follicles found?

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Detailed anatomical illustration of the human thyroid gland and surrounding structures, showing the right and left lobes, isthmus, nearby arteries, veins, nerves, lymph nodes, and cartilage in the neck. — thyroid gland Human thyroid gland.

Thyroid follicles are found within the lobes and the isthmus of the thyroid gland. These small, globular sacs are lined with follicular cells and contain a fluid called colloid, which stores the prohormone thyroglobulin.1