The PAS stain is widely used in diagnostic histopathology for various applications:
Detection of glycogen in liver and muscle tissues. Identification of fungal infections by staining the cell walls of fungi. Highlighting the basement membrane in kidney biopsies to assess glomerular diseases. Visualization of glycoproteins and mucins in epithelial cells. Detection of lipofuscin in aging cells, which can be useful in the study of neurodegenerative diseases.
