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    Book Contents

    1. Histopathology and Cytology Associated with Bacterial Diseases
    2. Histopathology and Cytology Associated with Viral Diseases
    3. Histopathology and Cytology Associated with Neoplastic Diseases
    4. Histopathology and Cytology Associated with Parasitic Diseases
    5. Histopathology and Cytology Associated with Mycotic Diseases
    6. Histopathology and Cytology Associated with Deficiency Diseases
    7. Histopathology and Cytology Associated with Other Diseases
    Histopathology and Cytology of
    Poultry Diseases
    By Ivan Dinev, DVM, PhD


    STREPTOCOCCOSIS

    Fig. 1. Valve thromboendocarditis. Massive thrombotic masses (Tr) coating the mitral valve in the left heart side of a duck. It is generally associated with Streptococcus zooepidemicus. H/E, Bar = 40 µm.

    Fig. 1. Valve thromboendocarditis. Massive thrombotic masses (Tr) coating the mitral valve in the left heart side of a duck. It is generally associated with Streptococcus zooepidemicus. H/E, Bar = 40 µm.

     
    Fig. 2. Streptococcosis, duck. A mixed wall thrombus (Tr) partially occluding the left atrioventricular opening. H/E, Bar = 50 µm.

    Fig. 2. Streptococcosis, duck. A mixed wall thrombus (Tr) partially occluding the left atrioventricular opening. H/E, Bar = 50 µm.

     
    Fig. 3. Myocardial infarction (I) as a result of thromboemboly. Focal degenerative necrobiotic lesions and beginning of organization, appearance of macrophages. H/E, Bar = 25 µm.

    Fig. 3. Myocardial infarction (I) as a result of thromboemboly. Focal degenerative necrobiotic lesions and beginning of organization, appearance of macrophages. H/E, Bar = 25 µm.

     
    Fig. 4. Widespread anaemic infarct (I) in the spleen of a duck. A peripherally reactive marginal zone of hyperaemia (h), necrotic heterophils and early fibroblastosis (f). The lesion is clearly delineated by the adjacent healthy parenchyma and is generally resulting from a portal venous thrombosis. H/E, Bar = 100 µm.

    Fig. 4. Widespread anaemic infarct (I) in the spleen of a duck. A peripherally reactive marginal zone of hyperaemia (h), necrotic heterophils and early fibroblastosis (f). The lesion is clearly delineated by the adjacent healthy parenchyma and is generally resulting from a portal venous thrombosis. H/E, Bar = 100 µm.

     
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