Light micrograph showing a human lung affected by an acute pneumonia. At top is the pleura, which is very thickened and congestive. The lumen of the alveoli are occupied by an extensive acute inflammatory infiltrate, with a predominance of neutrophil granulocytes.

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Photo credit: © JOSE CALVO / SCIENCE PHOTO LIBRARY / Alamy / Afripics
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Keywords: -, abnormal, acute, alveolar, alveoli, alveolus, granulocytes, histology, infiltrates, inflammatory, light, lm, lung, medical, medicine, micrograph, microscope, microscopy, neutrophil, oedema, pathohistological, pathohistology, pathology, pneumonia, pulmonary, respiratory, system, unhealthy, wall