PR MICHEL BRAUNER, ISM / SCIENCE PHOTO LIBRARY PR MICHEL BRAUNER, ISM / SCIENCE PHOTO LIBRARY
Tuberculosis. Coloured frontal chest X-ray of a patient with widespread nodular and cavitary pulmonary tuberculosis. Affected areas of the lungs (orange, lower left and right) are shown by grainy white patches. Pulmonary tuberculosis is caused by the bacterium Mycobacterium tuberculosis, which is spread by coughing and sneezing. The bacteria create primary tubercles, nodular lesions of the lungs. Symptoms include fever, weight loss and the coughing up of blood. Treatment is with long term antibiotics.
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