123 Dysregulated cross talk between alveolar epithelial cells and stromal cells in IPF reduces epithelial regenerative capacity Supplementary Figure 3: Aberrances in alveolar structure in IPF lung tissue. A) Representative image showing the presence of bronchiolization (right) adjacent to a pre-existing bronchiole (left) in the lung parenchyma in IPF lung tissue (hematoxylin and eosin, scale bar is 200 μm). B) Extensive fibroblastic foci covered by cubic to flat squamous epithelium, bordering a remaining alveoli filled with macrophages (hematoxylin and eosin, scale bar is 100 μm). 5
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