الفهرس 
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Abstract
the world . So In the present study comparsion of cell line and embryonated chicken egg (ECE) for the isolation
of H5N1 viruses from field samples were carried out .
Pools of samples collected from clinically suspected 300 birds from different poultry species (chicken , duck , geese and turkey) reared in Egyptian backyards at 2008 -
2009.