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(A) Representative images of lung tissue stained with hematoxylin and eosin and picrosirius red (×10; scale bar, 100 μm) for sham mice and for bleomycin-treated mice (2 wk after bleomycin instillation). (B–E) Correlation between hydroxyproline content as measure of total lung collagen and %ID/lung in sham and bleomycin-treated mice, 2 wk after instillation of bleomycin or vehicle and 150 min after probe injection.
