Periodic acid–Schiff reaction
- Staining color
- Blue: nucleus
- Red
- Neutral glycosaminoglycans
- Mucopolysaccharides
- Carbohydrates
- Glycogen
- Application
- Fungi (e.g., aspergillosis)
- Parasites
- Macrophage staining in Whipple disease
- Glycogen storage diseases
- Alpha-1 antitrypsin deficiency