Human lung. Light micrograph showing a human lung with dilated alveoli (emphysema) and thickening of the pleura (chronic pleuritis)

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Photo credit: © JOSE CALVO / SCIENCE PHOTO LIBRARY / Alamy / Afripics
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Keywords: -, abnormal, alveolar, alveolus, chronic, condition, disease, disorder, emphysema, histopathological, histopathology, human, infiltrate, inflammatory, light, lm, lung, medical, medicine, micrograph, microscope, microscopy, pathology, pleura, pleuritis, pulmonary, respiratory, system, unhealthy, wall