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Photomicrographs of histologic features of usual interstitial pneumonia of IPF lung

Photomicrographs of histologic features of usual interstitial pneumonia of IPF lung
The fibrotic foci (arrows) are hallmarks of usual interstitial pneumonia (Left: H and E stain; Right: Masson's trichrome stain-collagen is stained blue).
Courtesy of Ganesh Raghu, MD.
Graphic 58242 Version 2.0