Histological structure and adenocyte ultrastructure of glandular saccus regions in proventriculus of Bactrian camel

Glandular saccus regions in proventriculus of 8 Bactrian camels from Nei Monggol Autonomous Region were studied on histology, histochemistry and electron microscopy. Results were as follows: Histological structures of three glandular saccus regions are basically consistant, which of them consists of tunica mucosa, submucosa, tunica muscularis and serosa. Every glandular saccus region is divided into glandular pars and non-glandular pars. Surface of the glandular pars is covered with simple cuboidal epithelium. The lamina propria is thick and has many mucous glands. The glandular cells include many( ) mucous cells and a few paritall cells and endocrine cells. These cells’ultrastructure is similar to the resembling cells of cardiac glands of bovine animals. The histological structure of non-glandular pars is similar to that of the regions of non-glandular sacs. The surface is covered with stratified columnar epithelium. The cutins is obvious. It has thin lamina propria and no glands. The muscularis mucosa isthin and not continuous.