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Type I collagen expression in healthy (H) and osteoporotic (OP) bone. (A) Brightfield and fluorescence images of Sirius red‐stained cortical and trabecular bone (×20 magnification, 50 μm scale bar) and (B) graphical representation of the semi‐quantification for healthy samples (H), collagen‐enriched zones (OP+) and collagen‐impoverished zones (OP–) in osteoporotic samples
