U.S. flag

An official website of the United States government

Dot gov

The .gov means it's official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you're on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Skip to Main Navigation
Skip to Page Content
Skip to Atlas Navigation

Thyroid Gland, Follicular Cell - Hypertrophy - Gallery

Image of follicular cell hypertrophy in the thyroid gland from a male F344/N rat in a subchronic study
Thyroid Gland, Follicular Cell - Hypertrophy in a male F344/N rat from a subchronic study. Focal hyperplasia is present in two adjacent follicles (arrows).
Image of follicular cell hypertrophy in the thyroid gland from a male F344/N rat in a subchronic study
Thyroid Gland, Follicular Cell - Hypertrophy in a male F344/N rat from a subchronic study. Higher magnification of Figure 1 shows the epithelium lining the follicles is cuboidal to columnar.
Image of follicular cell hypertrophy in the thyroid gland from a male F344/N rat in a subchronic study
Thyroid Gland, Follicular Cell - Hypertrophy in a male F344/N rat from a subchronic study. The cuboidal to columnar lining epithelium contains small, clear, cytoplasmic vacuoles.
Image of follicular cell hypertrophy in the thyroid gland from a female Harlan Sprague-Dawley rat in a chronic study
Thyroid Gland, Follicular Cell - Hypertrophy in a female Sprague-Dawley rat from a chronic study. Follicles are smaller than normal, are lined by cuboidal epithelium, and contain amphophilic, flocculant-appearing material and exfoliated epithelial cells.