Permeability barriers must exist in transitional epithelium to prevent the free flow of water from underlying blood capillaries through the epithelium into the hypertonic urine, and such a barrier has ...

The fine structure of the transitional epithelium of rat ureter has been studied in thin sections with the electron microscope, including some stained cytochemically to show nucleoside triphosphatase ...

At the squamocolumnar junction of mice and humans,a new study has identified a unique population of transitional basal cells that express molecular markers of both oesophageal stratified squamous ...

Idiopathic pulmonary fibrosis (IPF) is a chronic disease in which healthy lung tissue is gradually replaced by scar tissue. While the early events that initiate this change are poorly understood, ...

A precancerous condition called Barrett’s oesophagus is of much interest, because it arises when some cells of the oesophagus take on a new identity — a phenomenon known as metaplasia. If we could ...