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  • Title: Isolation and experimental chicken-embryo-inoculation studies with budgerigar papovavirus.
    Author: Lynch J, Swinton J, Pettit J, Key D.
    Journal: Avian Dis; 1984; 28(4):1135-9. PubMed ID: 6441556.
    Abstract:
    Attempts to isolate and identify budgerigar papovavirus (BPV) were made during three separate outbreaks of disease diagnosed on pathological grounds. Direct electron microscopy was successful only when large areas of skin were extensively disrupted to release virus and then extracted with fluorocarbon to remove lipids. Direct inoculation of budgerigar tissue suspensions into chicken embryos or chicken cell cultures failed to produce detectable virus. However, when primary cultures of liver and kidney were prepared from affected budgerigars, BPV could be detected by electron microscopy and by the production of a cytopathic effect at the third or fourth passage in cell cultures. The isolated virus was pathogenic for 10-day-old but not 11- or 12-day-old chicken embryos. Inoculated 11- and 12-day-old embryos produced antibodies to BPV that were detectable 2 weeks after hatching by agar-gel-immunodiffusion tests.
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