A typical tuberculous granuloma in cattle most often contains a central area of:
Correct answer: C. Caseous necrosis
- A. Fat necrosis only
- B. Liquefied pus
- C. Caseous necrosis
- D. Serous fluid
Explanation
Mycobacterium bovis commonly produces granulomas with central caseous necrosis surrounded by macrophages, epithelioid cells, giant cells, and lymphocytes. Liquefied pus is more typical of a pyogenic abscess than a classical tuberculous granuloma.
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Covers the causes and mechanisms of disease, cellular injury, inflammation, healing, circulatory disturbances, neoplasia and disorders of major organs. It also includes gross and microscopic pathological changes, specimen interpretation and the distinction between aetiology, pathogenesis, clinical signs and lesions.
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