مشخصات پژوهش

In this study, the histology of the liver in the great tit was examined. The liver was fixed in 10% formalin and routine histological methods containing dehydration, clearing and paraffin embedding were used. Sections stained with hematoxylineosin for light microscopy evaluation. The tissue sections showed that the surface of the liver is covered by a thin capsule of connective tissue. Hepatocytes are arranged in radial columns around the central veins. Hepatocytes are arranged in cords radiating from the central vein. Hepatocytes are multifaceted and further characterized by a centrally located spherical nucleus with prominent nucleoli. The cytoplasm of these cells is eosinophilic. Between the columns of liver cells, sinusoids and their wall cells are well visible. Endothelial cells of sinusoids are squamous and have elongated and dark nuclei. Kupffer cells can also be recognized in the wall of sinusoids with a larger size and a triangular nucleus. In the portal areas, branches of the portal vein, hepatic artery and bile ducts are well defined. Branches of portal vein have the largest diameter and bile ducts can be distinguished with simple cuboidal epithelium.