The structure of the interstitial tissue of the active and resting avian testis

摘要: The interstitial tissue of the testis was studied in gonadally active and inactive domestic fowl (Gallus gallus domesticus), guinea-fowl (Numida meleagris), duck (Anas platyrhynchos) Japanese quail (Coturnix coturnix japonica). Gonadal inactivity induced by a single subcutaneous injection 50 mg oestradiol benzoate. structure this similar all birds studied. Lymphatic vessels were mostly thin meandered between peritubular peripherally centrally located blood vessels, Leydig cells macrophages. basal lamina rested on closely associated homogeneous microfibrillar layer free collagen fibres. myofibroblast several thick, quite compact. resting highly irregular, relatively electron-dense, contained electron-lucent globules, sent numerous finger-like processes or plicae into seminiferous epithelium, particularly Sertoli cells. few but typical structure. In they accumulated lipid droplets, dense heterogeneous bodies, probably lysosomes, appeared to degenerate. avian testicular interstitium is that human cat possessing multi-layered component, rodent small number cells, as well location lymphatic vessels. Thus bird combines characteristics found variably mammals.