PAS stain : Principle, Procedure, uses

The Periodic Acid-Schiff (PAS) stain is a histological staining technique used to detect carbohydrates and glycogen in tissue sections. It is based on the reaction between periodic acid and carbohydrates, followed by the reaction with Schiff’s reagent. This results in the formation of a bright pink to magenta-colored complex that highlights the presence of carbohydrates. … Read more

Short note on special stains in Histopathology

mucor demonstration by PAS stain

Special stains in histopathology serve the primary purpose of identifying specific components within tissues, such as cellular structure ,fibrosis, calcification, proteins, carbohydrates, pigments,microrganisms and other residual elements. These stains help pathologists visualize and differentiate various constituents within tissues by highlighting them in distinct colors, enabling the identification of diseases . Classification The classification includes: Stains … Read more