Melnyk V. The Morphofunctional characteristic of lymphatic ganglions and spleen of geese and ducks

The dissertation work is dedicate to reserch of spleen and lymph nodes morphofunctional characteristic of geese and ducks at the age of the beginning of sexual maturation. It is established that spleen has flat triangular shape. There are basis, top, dorsal and ventral surfaces, cranial and caudal edges clearly expressed on this organ. Absolute and relative weight of spleen and its linear parameters depend on mass of body and its size. The connective tissue strome of spleen is presented by capsula and trabecules. Pulp is situated between them. There are periarterial and perielypsoid lymphoid sheathes, besides lymphoid folliculs, entered the structure of white pulp. Cellular structure of white pulp is presented by reticulocytes, lymphoblasts (immunoblasts), lymphocytes, plasmocytes and macrophages, and in red pulp are also erythrocytes, granulocytes and myelocytes. Presence of myelocytes and young forms of granulocytes (band-formed) indicate on their possible development in spleen. The even sterno-cervical lymph nodes are always registered in geese and ducks. We haven't registered transversal lymph nodes in these poultry. Lymph nodes of geese and ducks consist of connective tissue stroma, parenchyma and sinus. Connective tissue stroma is presented by capsula and trabecules. Cortical substance is presented by diffuse lymphoid tissue and secondary lymphoid folliculs, and medullary substance is presented by only diffuse lymphoid tissue. There is only central sinus in lymph nodes. Cellular structure of sterno-cervical lymph nodes parenchimais are presented by reticulocytes, lymphocytes, lymphoblasts (immunoblasts), macrophages, monocytes, plasmocytes, mast cells and myoid cells.