ENZYME HISTOCHEMICAL STUDIES ON SALT GLAND OF DUCKS (ANAS PLATYRHYNCHUS) .2. CYTOCHEMICAL LOCALIZATION OF SOME HYDROLASES

Studying the site of hydrolytic enzymes in the salt gland of domestic ducks the glycosidases β-d-glucuronidase, β-d-glucosammidase, α-glucosidase and β-d-galactosidase as well as the hydrolases non-specific phosphatases, esterases, ATPase and leucinaminopeptidase have been investigated with histochemical techniques. The epithelia of the salt gland show distinct activities of non-specific esterases, that differ quantitatively. Furthermore we noticed a strong granular activity of non-specific acid phosphatase in the central canal and in the glandular duct system. The meaning of these findings in relation to secretion and absorption is discussed. © 1969 Springer-Verlag.