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Lung infected with tuberculosis, 19th century illustration
Illustration of the superior lobe of the right lung infected with tuberculosis. Tuberculosis (TB) is a bacterial infection that usually affects the lungs but can affect other body tissues. It causes inflammation and scarring in the lungs, leading to tissue damage. Here, the lung's blue-grey colour is indicative of pneumonia. It also contains nodular lesions (yellow, grey) and a large cavity at the top (circular, grey). Commonly called consumption in the 1800s, TB was a widespread cause of death during this period before the invention of vaccines (1921) and antibiotics (1943). Published in 'Illustrations of pulmonary consumption' by Samuel George Morton in 1834., by WELLCOME IMAGES/SCIENCE PHOTO LIBRARY
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