Nose, Olfactory Epithelium, Glands - Metaplasia - Gallery

Nose, Olfactory epithelium, Glands - Metaplasia, Squamous in a male F344/N rat from a chronic study. The Bowman�s glands are dilated and lined by squamous epithelium.

Nose, Olfactory epithelium, Glands - Metaplasia, Squamous in a male F344/N rat from a chronic study. The Bowman�s glands are dilated and lined by squamous epithelium and contain cellular debris.

Nose, Olfactory epithelium, Glands - Metaplasia, Squamous in a male F344/N rat from a chronic study. The Bowman�s glands are dilated and lined by squamous epithelium and contain eosinophilic material. There is squamous metaplasia of the overlying olfactory epithelium.

Nose, Olfactory epithelium, Glands - Metaplasia, Squamous in a male F344/N rat from a chronic study (higher magnification of Figure 3). The dilated Bowman�s glands are lined by ciliated squamous epithelium and contain proteinaceous material. There is squamous metaplasia of the overlying olfactory epithelium.

Nose, Olfactory epithelium, Glands - Metaplasia, Respiratory in a male B6C3F1/Nmouse from a chronic study. The hyperplastic Bowman�s glands all have respiratory epithelium. Image provided courtesy of Dr. R. Miller.