CNRI / SCIENCE PHOTO LIBRARY CNRI / SCIENCE PHOTO LIBRARY
Tuberculosis. Light micrograph of a section through a lymph node showing a Langhans' cell caused by tuberculosis (TB). A Langhans' cell is an agglomeration of macrophage white blood cells caused by the infection. The nuclei of the macrophages are seen around its periphery. TB is a disease caused by infection with Mycobacterium tuberculosis bacteria. The bacteria are usually inhaled in water droplets, and can progress from the lungs to the lymphatic system. It can cause coughing, chest pain and fever, and may be fatal. It can be treated with antibiotic drugs, and the BCG vaccination can confer lifelong immunity to the disease. Magnification unknown.
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