Alcian Blue/PAS Stain Kit is intended to identify acidic and neutral mucins in tissue sections on the Artisan Link and Artisan Link Pro Staining Systems. This procedure clearly separates the acidic and neutral mucins by color and can be used to distinguish all mucins in tissue sections. Alcian Blue pH 2.5 stains the acid mucin blue while the Schiff's reagent stains the neutral mucins pink to red. Mixtures of the two mucins will appear purple due to the positive reactions with both Alcian Blue and Schiff's reagent. This stain can be used with the digestive enzyme, Artisan Alpha-Amylase (Code AR171), for the demonstration of glycogen in tissue.