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. Author manuscript; available in PMC: 2010 Jan 12.
Published in final edited form as: Biomaterials. 2009 Jan 1;30(8):1482–1491. doi: 10.1016/j.biomaterials.2008.11.040

Fig. 4.

Fig. 4

(A) Histologic appearance of the acellular allograft at 7 days post surgery. A dense cell population consisting primarily of macrophages was present. New blood vessels (asterisks) and neomatrix (blue staining) deposition were also present. (B) Histologic appearance of the acellular allograft at 28 days post surgery. The acellular allograft was no longer discernable and was replaced by moderately well organized collagenous tissue containing blood vessels (asterisks), islands of skeletal myoblasts (arrows) and a small number of randomly distributed mononuclear cells. Red staining tissue bundles at the bottom of the images represent the underlying transversalis muscle (Masson's Trichrome, 200×).