Alcian Blue-Periodic Acid Schiff Staining Solution (AB-PAS)

Introduction:
Alcian blue-periodic acid schiff staining(AB-PAS) is an important histochemical technique that qualitatively and locally identifies carbohydrates in tissues via specific chemical reactions. It plays an irreplaceable role in the diagnosis and classification of gastrointestinal diseases, especially intestinal metaplasia of gastric mucosa.