Kidney - renal cortex - plastic section (100x objective lens)

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This very high magnification view of a plastic section from the renal cortex shows:

 

(1) a portion of the renal corpuscle (in the upper right corner). Note the squamous epithelial cells with flattened nuclei that form the parietal (outer) layer of Bowman's capsule, the capillaries of the glomerular capillary tuft, and the rounded nuclei of podocytes that cover the capillaries to form the visceral layer of Bowman's capsule.

 

(2) a proximal convoluted tubule (upper left), characterized by an apical brush border of microvilli (arrow), which reduces the internal diameter of the tubule.

 

(3) profiles of two distal convoluted tubule (lower right and lower center of the image), which lack a brush border and have a larger diameter lumen.

(4) capillaries and veins. Both have walls of endothelial cells with flattened nuclei. The veins have a larger diameter and are filled with irregularly shaped erythrocytes.

Stain = H&E.

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