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Histopathology and Cytology of
Poultry Diseases By Ivan Dinev, DVM, PhD
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INFECTIOUS ENCEPHALOMYELITIS
Fig. 1. The histological lesions are specific and have a diagnostic value. A non-purulent encephalomyelitis with noticeable perivascular clusters are present. H/E, Bar = 25 µm.
Fig 2. & Fig 3. A particularly valuable finding is the central chromatolysis of neurons in the segments of the lumbosacral spinal cord enlargement, and less frequently, chromatopyknosis. H/E, Bar = 25 µm.
Fig. 4. Other important diagnostic findings are the dense lymphoid aggregates in the musculature of the proventriculus and the gizzard, as well as in the pancreatic interstitium (arrow). H/E, Bar = 40 µm.
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