SIMPLE CUBOIDAL EPITHELIUM – 3
The wall of many types of thin tubes in the body are formed by simple cuboidal epithelia , as is the case of the kidney or renal tubules shown in the image. Most of these tubules were sectioned transversely. Notice on the right a longitudinally sectioned tubule in a vertical position.
Remember that transversely sectioned tubes have the appearance of rings. The wall of these tubules is formed by a single layer of cells, whose shape is mostly square. The cells are cuboidal and, the epithelium, therefore is a simple cuboidal epithelium.
This section was subjected to the periodic acid-Schiff (PAS) technique, which highlights polysaccharides. After performing the PAS technique, the basal membranes on which the epithelial layer is placed, become much better visualized than after HE staining alone, and stain in a magenta color.
After you place the cursor or click on the image:
In two tubules sectioned transversely, the epithelium becomes pink and their inside cavities as well as that of the longitudinally sectioned one become blue. The basal membranes of the pair of tubuli become highlighted in green.
Remember that transversely sectioned tubes have the appearance of rings. The wall of these tubules is formed by a single layer of cells, whose shape is mostly square. The cells are cuboidal and, the epithelium, therefore is a simple cuboidal epithelium.
This section was subjected to the periodic acid-Schiff (PAS) technique, which highlights polysaccharides. After performing the PAS technique, the basal membranes on which the epithelial layer is placed, become much better visualized than after HE staining alone, and stain in a magenta color.
After you place the cursor or click on the image:
In two tubules sectioned transversely, the epithelium becomes pink and their inside cavities as well as that of the longitudinally sectioned one become blue. The basal membranes of the pair of tubuli become highlighted in green.
Kidney. Staining: PAS + Hematoxylin and eosin (HE). Medium magnification.
