Intercellular junction of urodeal and phallic epithelial cells in the guinea fowl, Numida meleagris.
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چکیده
منابع مشابه
Histomorphology of Thymus Gland in Guinea Fowl (Numida meleagris)
The thymus gland is a lymphoid tissue derived from III and IV pharyngeal pouches. It is the source of stem cells that migrate to other lymphoid organs and participate in immune reactions (Kent, 1978). The thymus gland is regarded immunologically as a primary or central lymphoid organ and its presence is essential for the development of peripheral lymphoid tissues and their associated adaptive i...
متن کاملSexing in guinea fowls (Numida meleagris).
Despite the potentials and contributions of guinea fowls to economic and social life in Ghana, accurate sex identification in these birds is still a major problem. Three hundred and sixty guinea fowls (180 birds per sex) were used in determining a more accurate and farmer friendly sexing technique. The sexing methods explored were vent, biometric, and molecular techniques. Vent sexing was accom...
متن کاملHistogenesis of the Oesophagus of Guinea Fowl (Numida meleagris) at Prehatch and Posthatch
The histogenesis of the primordial oesophagus was studied to determine the period in which the tunics of the oesophagus developed and became functional in the helmeted guinea fowl (Numida meleagris). Eighteen embryos and nine keets were studied at prehatch and posthatch, respectively. Simple columnar epithelium surrounded by mesenchymal cells was obvious at the 8th day of embryonic development....
متن کاملThe cost of running uphill: linking organismal and muscle energy use in guinea fowl (Numida meleagris).
Uphill running requires more energy than level running at the same speed, largely due to the additional mechanical work of elevating the body weight. We explored the distribution of energy use among the leg muscles of guinea fowl running on the level and uphill using both organismal energy expenditure (oxygen consumption) and muscle blood flow measurements. We tested each bird under four condit...
متن کاملEntraining the natural frequencies of running and breathing in guinea fowl (Numida meleagris).
Lung ventilation of tetrapods that synchronize their locomotory and ventilatory cycles during exercise could be economized if the resonant frequency of the respiratory system matched the animal's preferred step frequency. To test whether animals utilize this strategy, the input impedance of the respiratory system of five anesthetized, supine guinea fowl (Numida meleagris) was measured using a f...
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ژورنال
عنوان ژورنال: The Japanese Journal of Veterinary Science
سال: 1983
ISSN: 0021-5295,1881-1442
DOI: 10.1292/jvms1939.45.313