4. Marek Disease (MD, Fowl Paralysis, Neurolymphomatosis gallinarum, Acute Leukosis) |
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1) Paralysis of legs and wings seen in diseased chicken. |
2) Nodular tumors developed at feather roots on the skin. |
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3) Whitish tumor lesions seen in the muscles (arrow pointed). |
4) Vagus nerve, swelling and thickened, at the neck. |
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