Single-Layered Cuboidal Epithelium-Renal Papilla

The surfaces of single-layered (simple) cuboidal epithelial cells appear almost rectangular in sections. The basic cell structure is polygonal. In this cross-section of a renal papilla, a collecting duct is cut perpendicularly. It is lined with single-layered cuboidal ( isoprismatic) epithelium. The epithelial cells have apicolateral terminal bars (complexes) 1 , which are clearly recognizable as heavily stained focal areas. The cell nuclei are round and very heavily stained with eosin. The finely granular cytoplasm and particularly the perinuclear space contain few organelles. There is a thick sub epithelial basal membrane 2 . Several capillaries close to the collecting duct are cut 3 .

1 Terminal bars (complexes)

2 Basal membrane

3 Capillaries

Stain: hemalum-eosin; magnification: × 400

References

Kuehnel, W.(2003). Color Atlas of Cytology, Histology, and Microscopic Anatomy. 4^th edition . Institute of Anatomy Universitätzu Luebeck Luebeck, Germany . Thieme Stuttgar t · New York .