Abstract

This study is concerned with the staining of epithelial acid glycoproteins by Alcian Blue at various pH levels. A detailed analysis of the effect of pH on Alcian Blue staining of epithelial tissues at selected sites was made. Alcian Blue was combined with the periodic acid-Schiff technique, the Alcian Blue being used at pH levels between 2.6 and 0.5.Animal salivary glands, human foetal tracheal gland and epithelial goblet cells of the adult bronchial mucosa were chosen for study because the nature of their acid glycoprotein is known and is relatively simple.

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