1995 Cilt 14 Sayı 1-2-3

Permanent URI for this collectionhttps://hdl.handle.net/11452/32012

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    İnfantil boz ayılarda testisin yapısal özellikleri üzerinde histolojik çalışmalar
    (Uludağ Üniversitesi, 1995) Özfiliz, Nesrin; Uludağ Üniversitesi/Veteriner Fakültesi.
    The study was carried out on 15 months old 2 infantile Brown bears brought to the Wild Life Research Center of Uludağ Üniversity, Faculty of Veterinary Medicine. There are a few studies exits on the structural aspects of the testes of adult Brown bears; but there is no study on the structural aspects of the testes of infantil Brown bears. The tissue pieces taken from three different parts of testes fixated in buffered formalin. The 5-7 p. sections cut from paraffin blocks, stained with Corssmonn 's triple stain. Gomori's silver stain, Pinkus ' orcein-giemsa stain and Mc Manus' periodic acide schiff (PAS) technique. The 10-15 p. cryostat sections were stained with oil-red 0 stain method. The average diameters of the seminiferous tubules were measured with the method of Gill and Leighton. Testes were cut longitudinally into two pieces and the lenghts were measured as 3.85 ± 0.15 cm. The tunica albuginea surrounding the testes was rich in vessels. Interstitial tissue between the seminiferous tubules was a wide loose connective tissue containing many blood vessels. There were groups of Leydig cells with their polygonal shapes. The walls of the seminiferous tubules were made up spermatogonia, primer spermatocyts, atypical cells and Sertoli cells. The average diameters of the seminiferous tubules were 105.50 ± 3.5 p.. Rete testes was lined by simple cuboidal or pyramidal epithelial cells. Ductuli efferentes were lined by ciliated colunmar epithelium whereas some of them were stained dark and the others light. Ductus epididymidis was lined by pseudostratified columnar epithelium with stereocilia. The walls of ductus deferens of one bear was lined by simple columnar epithelium whereas the walls of the other's was lined by pseudostratified epithelium containing many vacuols between cells. The lumina of all excretory ducts were lack of spermatozoa.