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The aim of this study was to determine the effect of caponization on selected morphometric parameters and mineral density of tibiotarsal bones in Green-legged Partridge cockerels. The experiment was conducted on 200 cockerels. At 8 wks of age, 100 birds were surgically castrated. At 12 and 24 wks of age, blood samples were collected from 10 intact cockerels and 10 capons, and the birds were slaughtered...
Stimulated by demands of the natural environment conservation, the need for thorough structural and functional identification of microorganisms colonizing different ecosystems has contributed to an intensive advance in research techniques. The article shows that some of these techniques are also a convenient tool for determination of the physiological state of single cells in a community of microorganisms...
Cholangiocarcinoma has been diagnosed in a 9-year-old cockatiel (Nymphicus hollandicus). Nodules, 1 to 5 mm in diameter, white to brown-red in colour, were visible all over the surface of the liver. A microscopic examination revealed the presence of acinar cells resembling biliary epithelium, with numerous mitotic figures and "lakes" of mucin among them. Neoplastic changes were accompanied...
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