Intermediate magnification image of the thyroid gland. The thyroid gland is composed of spherical colloid-filled follicles that are lined by follicular cells. The follicular cells produce thyroid hormones by the production of thyroglobulin, which is stored in the extracellular colloid. At the basal side of the follicular cells is an extensive capillary plexus. Image from AF Wiechmann and CR Wirsig (2003) "Color Atlas of Xenopus laevis Histology", (page 74, Chapter 7, Endocrine Organs: Figure 12). Copyright 2003. Kluwer Academic Publishers. Reproduced with kind permission from Springer Science & Business Media B.V.
Image published in: Color Atlas of Xenopus laevis Histology
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