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Figure 3 | Respiratory Research

Figure 3

From: The increase of microRNA-21 during lung fibrosis and its contribution to epithelial-mesenchymal transition in pulmonary epithelial cells

Figure 3

Histological analyses for miR-21 expression in mouse and human lung tissues using in situ hybridization. (A-D) In situ hybridization for miR-21 was performed in mouse lung tissues obtained from saline- (A) or bleomycin-treated mice (C, D). Figure 3C and 3D show the areas demonstrating severe and mild fibrotic lesions, respectively. Staining using control probes with a scrambled sequence showed minimal background staining (B). (E-G) In situ hybridization for miR-21 was performed in non-fibrotic lung tissue obtained from patients without fibrotic lung disease (E) and patients with IPF (F, G). Figure 3F and 3G show the areas demonstrating severe and mild fibrotic lesions, respectively. Arrows indicate staining for miR-21. Asterisks indicate fibrotic foci. Arrowheads indicate anthracosis. Bar = 50 μm.

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