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CIL:39070*  Cite 

This light micrograph shows a transverse section of a region of mouse kidney cortex stained with toluidine blue. The kidney is made up of two distinct tissue regions: the medulla and the cortex. The nephrons are the functional units of the kidney and produce urine; they span both the medulla and the cortex. The medulla is the inner most region and contains the part of the nephron called the loop of Henle that is involved in the reabsorbtion of water. The cortex is present around the outside of the medulla and contains regions of the nephron called the proximal and distal convoluted tubules and glomerulus. This is where blood is filtered and the balance of irons and nutrients is maintained. In this image, the top left hand corner shows about a quarter of a Bowman's capsule, with capillaries and sections of red blood cells. The right hand side shows a cross section of a proximal convoluted tubule (PCT). The epithelial cells that form its walls are full of mitochondria. The PCT is also fringed with microvilli extending in to the lumen of the tubule, which greatly increase the surface area for absorption.

Technical Details

B0007543 Kidney cortex. Wellcome Images available under the following creative commons usage

Biological Sources
NCBI Organism Classification
Mus musculus
Cell Type
epithelial cell
Cellular Component
Biological Context
Biological Process
renal system process
kidney morphogenesis
iSpike Walker
Wellcome Images
Digital Object Identifier (DOI)
Archival Resource Key (ARK)
Image Type
recorded image
Image Mode
bright-field microscopy
Parameters Imaged
absorption of illumination
Source of Contrast
differences in adsorption or binding of stain
Visualization Methods
toluidine blue
Sample Preparation
chemically fixed tissue
Relation To Intact Cell
sectioned tissue
Spatial Axis Image Size Pixel Size
X 800px ——
Y 560px ——