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Collagen fiber angular distribution quantified from picrosirius red-stained histological images for (A) acellular native heart ECM (control group), (B) acellular ECM 15M post-MI, (C) acellular scar ECM 1W post-MI, (D) acellular scar ECM 2W post-MI, (E) acellular scar ECM 4W post-MI, and (F) acellular scar ECM 12W post-MI.
