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H&E staining of the decellularized umbilical arteries before implantation (A) and explanted 8 weeks after perfusion-fixation (B). Original magnification, 2.5×; scale bar =1 mm. The vessel wall was collapsed as the vessel was contracted before fixation (A). (C) Outer diameters of the decellularized umbilical arteries implanted into the nude rats (#1–#4) over an 8-week period. Color images available online at www.liebertonline.com/ten.
