ساختمان ميكروسكوپي كبد و پانكراس و مجاري آن ها در تاس ماهي ايراني

Microscopic Structures of the liver and pancreas associated with their ducts in the Persian Sturgeon

In the present survey the liver and pancreas of six fish were studied. The specimens after fixation in 10% formalin were sectioned for six microns. Then after staining with Hematoxylin and Eosin were microscopically studied. The surfaces of liver are covered by a row of simple cuboidal to short eolumnar cell associated with a layer of connective tissue. Hepatocytes containing glycogen and lipid vacuoles are formed as irregular plates. Amongst them many sinusoids with reticuloendothelial and kupffer cells are present. Some areas of connective tissue, as portal tracts, containing vascular branches and bile ducts and some lymphatic tissue are observed. Pancreas as a mixed gland including an exocrine portion consists of serous acini and their ducts. The endocrine portion consists of langerhans islets. Acini consist of pyramidal cells containing zymogenic granules. and their ducts possess simple cuboidal to stratified columnar epithelium. The islets of langerhans included many different secretory cells with a lot of capillaries receiving their secretions.