Paraffin-embedded kidney tissue stained with PAS

Panel A: Early degenerative smooth muscle changes in a renal cortical arteriole (arrow).
Panel B: More advanced degenerative smooth muscle changes (thick arrows) in a renal cortical arteriole.

PAS: periodic acid-Schiff.

Courtesy of Behzad Najafian, MD.

Graphic 129330 Version 1.0

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