Ultrastructural demonstration of secretion by exocytosis in rat pinealocytes with the use of the tannic acid method.
In the rat pineal gland the mechanism of release of secretory material was studied ultrastructurally after incubating tissues in Ringer solution containing tannic acid. The results indicate that pinealocytes release the contents of secretory vesicles into the extracellular space via exocytosis, a phenomenon that has not been visualized previously in this cell type. This finding may reflect release of polypeptides by the pineal gland.
D000818:Animals; D005089:Exocytosis; D047348:Hydrolyzable Tannins; D008297:Male; D008854:Microscopy, Electron; D010870:Pineal Gland / Q000378:metabolism / Q000648:ultrastructure*; D051381:Rats; D011919:Rats, Inbred Strains
D047348:Hydrolyzable Tannins