The Periodic Acid-Schiff (PAS) stain is a histological technique used to detect polysaccharides such as glycogen, mucopolysaccharides, and glycoproteins in tissue samples; the procedure involves treating tissue with periodic acid to oxidize vicinal diols into aldehydes, which then react with Schiff's reagent to produce a magenta coloration, allowing visualization of carbohydrate-rich structures in cells and tissues.
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PAS Stain , Principle, Reagents , Procedure , result ....Added:
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