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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


    HISTOMONIASIS

    Fig. 1. Histomoniasis, liver, turkey poult. Coagulative necrotic foci (N), haemorrhagically demarcated from the adjacent liver parenchyma. H/E, Bar = 40 µm.

    Fig. 1. Histomoniasis, liver, turkey poult. Coagulative necrotic foci (N), haemorrhagically demarcated from the adjacent liver parenchyma. H/E, Bar = 40 µm.

     
    Fig. 2. Multiple oval-shaped histomonads (arrows) in a liver tissue cross-section, pheasant. H/E, Bar = 25 µm.

    Fig. 2. Multiple oval-shaped histomonads (arrows) in a liver tissue cross-section, pheasant. H/E, Bar = 25 µm.

     
    Fig. 3. Histomoniasis, liver, turkey poult. Initial organization of a necrotic focus in the liver. A wreath of foreign-body giant cells (arrow – a) in the periphery of necrotic area. Parasites (arrow – b) are also seen on the tissue cross-section. H/E, Bar = 35 µm.

    Fig. 3. Histomoniasis, liver, turkey poult. Initial organization of a necrotic focus in the liver. A wreath of foreign-body giant cells (arrow – a) in the periphery of necrotic area. Parasites (arrow – b) are also seen on the tissue cross-section. H/E, Bar = 35 µm.

     
    Fig. 4. Regenerative reparative processes at a later stage of the organization of a hepatic necrotic focus in a turkey poult. Histomonas forms (arrows) are still visible. H/E, Bar = 40 µm.

    Fig. 4. Regenerative reparative processes at a later stage of the organization of a hepatic necrotic focus in a turkey poult. Histomonas forms (arrows) are still visible. H/E, Bar = 40 µm.

     
    Fig. 5. Histomoniasis, caecum – transverse cross-section, turkey poult. Coagulative necrosis (N) affecting the mucosa and submucosa of the intestinal wall. H/E, Bar = 100 µm.

    Fig. 5. Histomoniasis, caecum – transverse cross-section, turkey poult. Coagulative necrosis (N) affecting the mucosa and submucosa of the intestinal wall. H/E, Bar = 100 µm.

     
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