Tuberculosis. Gross clinical specimen of a section through a lung in a tuberculosis (TB) infection. A TB infection results from inhaling Mycobacterium tuberculosis bacteria. Nodular lumps of damaged lung tissue and cavities result. TB causes coughing (often with bloody sputum), chest pain, shortness of breath and fever. It may be fatal. It can be treated with antibiotic drugs, although they may have to be taken for several months. A vaccine (BCG) is also available, which confers lifelong protection against the disease.

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