The epithelial cells that line our surfaces exist as single or multiple layers with flat, columnar or cuboidal appearance, depending on the tissue. Many epithelia are often exposed to physical ...

Thus, much of the increase in cell number at steady state occurs in the TA population. More distally in the bronchioles, the epithelium changes to a simple ciliated, columnar epithelium with ...

Barrett's esophagus is an acquired metaplastic abnormality in which the normal stratified squamous epithelium lining of the esophagus is replaced by an intestinal-like columnar epithelium.