A LECTIN HISTOCHEMICAL-STUDY OF THE ZYGOMATIC SALIVARY-GLAND OF ADULTDOGS

Seven lectins (PNA, DBA, SEA, UEA I, LTA, WGA and ConA), conjugated wi th horseradish peroxidase, were used to characterize the glycosidic re sidues in the zygomatic gland of adult dogs. In some cases (PNA and DB A), lectin staining was preceded by neuraminidase digestion. The acina r and tubular cells produced glycoconjugates with different sugar resi dues, presenting binding sites for all of the lectins used. Tile apica l surfaces of the cells lining the intra- and interlobular ducts were also stained by all the lectins. In contrast, the demilunar cells only reacted with the Neu-PNA sequence and Con A.