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Epithelial hyperplasia (arrow) on the mucosal surface of the air sac... | Download Scientific Diagram
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Diagram Showing The Pulmonary Alveolus (air Sacs) In The Lung Royalty Free Cliparts, Vectors, And Stock Illustration. Image 15915102.
![Mayo Clinic on Twitter: Mayo Clinic on Twitter:](https://pbs.twimg.com/media/DrxHTOzX0AAsi1T.jpg)
Mayo Clinic on Twitter: "#Pneumonia is an infection that inflames the air sacs in one or both lungs. Learn more about this serious lung infection and how to keep you and your
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