The Ultrastructure of Secretory Cells of the Islets of Langerhans in South American Catfish Rhamdia quelen

Figure 2

Periphery of normal islet. Pancreatic acinar (AC), α- (A), and β- (B) cells are visible with their distinctive granules. The preservation of a dense inner core and less dense outer mantle of the α-granules and the dilated Golgi structures (G). Ceroid granules (curved arrows) are present in the α-cells. Note the centrioles (straight arrows). M: mitochondrion. X 9500.