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Viral Diseases

5) Erosion and ulcer of mucous membrane of the     abomasum accompanied by hyperemia and/or     hemorrhages. 6) Infarction of bronchus with inhaled feed and     dark-reddish consolidated pneumonic lesions. 7) Hyalin degeneration, calcipexy (calcinosis) and     fibrosis of striated muscles at the esophagus     wall. 8) Degenerative and necrotic tissues filling the     bronchiole and cellular infiltration, and infil-     tration of neutrophils and detention of serous     fluid in alveoli, hyperemia at alveolar wall (HE     staining).

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