Light and electron microscopic investigations on the endocrine pancreas in Angora rabbit

Abstract

The endocrine pancreas of the Angora rabbits (10 healthy adult) was examined in this study using histochemistry and electron microscopy. Pancreas samples taken rabbits were fixed in Bouin, Carnoy, and gluteraldehyde-paraformaldehyde solutions. Although, two endocrine cell types was determined in sections of pancreas staining as histochemical by aldehyde fuchsine light green orange G (AF), endocrine islets were constituted by A, B and D cells in electron microscopical examination. The centre of the Langerhans islets were occupied predominantly by B cells stained purple-violet and surrounded a few by A cells stained yellowish-green. Secretory granules of A cells generally were spherical and high electron-dense whereas in the cytoplasm of B cells were determined high electron-dense and low electron- dens granules, have a halo between the membrane and their content. D cells were observed contain to round two kinds of secretory granules, have high electron-dense and low electron-dense material, but smaller than those A and B cell types. In conclusion, the endocrine pancreas of the Angora rabbits were constituted by numerously B cells, a few A cells, and infrequently D cells.