COVID-19 is an emerging, rapidly evolving situation.

Get the latest public health information from CDC and research information from NIH.

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

Nose, Epithelium - Hyperplasia, Atypical - Gallery

Image of hyperplasia, atypical in the nose, respiratory epithelium from a male B6C3F1/N mouse in a chronic study
Nose, Respiratory epithelium - Hyperplasia, Atypical in a male B6C3F1/N mouse from a chronic study. An abnormal proliferation of basal cells has replaced respiratory epithelium on the turbinate.
Image of hyperplasia, atypical in the nose, respiratory epithelium from a female B6C3F1/N mouse in a chronic study
Nose, Respiratory epithelium - Hyperplasia, Atypical in a female B6C3F1/N mouse from a chronic study. Proliferation of atypical and poorly organized epithelium is present on the turbinate.
Image of hyperplasia, atypical in the nose, squamous epithelium from a female Osborne Mendel rat in a chronic study
Nose, Squamous epithelium - Hyperplasia, Atypical in a female Osborne Mendel rat from a chronic study. There is some disorganization of the squamous cells and rete peg-like structures.
Image of hyperplasia, atypical in the nose, olfactory epithelium from a male F344/N rat in a chronic study
Nose, Olfactory epithelium - Hyperplasia, Atypical in a male F344/N rat from a chronic study. Nests of proliferative cells (arrows) have extended beneath the basement membrane.
Image of hyperplasia, atypical in the nose, olfactory epithelium from a male F344/N rat in a chronic study
Nose, Olfactory epithelium - Hyperplasia, Atypical in a male F344/N rat from a chronic study. A proliferative band of neuronal-like cells is present beneath the basement membrane, and the overlying olfactory epithelium is disorganized.