... prepared fromthe gel-forming mucins isolated from other epithelial secretions (respiratory and cer-vical) and from intestinal cell lines (HT-29 and PC/AA). In this example the electro-phoretic mobility ... monitored with a periodic acid-Schiff (PAS) assay and with avariety of lectins and mucin- or carbohydrate-specific antibodies (for a discussion ofthe relative merits and drawbacks of these analytical ... with“naked” cysteine-rich domains (4–7).Histological and biochemical investigations suggested that mucous-producing tis-sues and their secretions contained a complex mixture of mucin-type glycoproteins.However,...