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.


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

Skin - Hyperkeratosis - Gallery

Image of hyperkeratosis in the skin from a male F344/N rat in a subchronic study
Hyperkeratosis-parakeratotic hyperkeratosis (arrow) in a male F344/N rat from a subchronic study.
Image of hyperkeratosis in the skin from a female B6C3F1 mouse in a chronic study
Hyperkeratosis-orthokeratotic hyperkeratosis (arrow) in a female B6C3F1 mouse from a chronic study.