Identification of glycoproteins in mucous cells of epidermis and gill of Tinca tinca Linnaeus, 1758 (Cypriniformes: Cyprinidae).

SUMMARY The present article reports of the glycoproteins in the mucous cells of gill of the Tinca tinca. As material, twenty five uninfected Tinca tinca were used. The gills were rapidly excised and fixed by immersion in 10% buffered formalin for light microscopic studies. The samples were routinely processed and embedded in parafin. Histochemical techniques were performed for the density and differentiation of carbohydrate moieties. Histochemical analysis showed that the gills mucous content included acidic (AB pH 2.5 +), neutral (PAS +), neutral or acid-rich (PAS/AB pH 2.5 +), strong acid sulphated (AF +) and strong sulphated (AF/AB pH 2.5 +) glycoproteins (GPs).