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Immuno-histochemical evaluation of the scaffolds harvested at day 7. Angiogenesis and vasculogenesis quantified by diaminobenzidine staining of the scaffold sections with anti-mouse CD31 (A) and anti-human CD31 (B) antibodies, respectively. One million EPCs were seeded in each scaffold. The scaffolds with VEGF were loaded with 10 μg of the growth factor. The scaffolds with heparin were cross-linked for 15 h. Scale bar=100 μm. Color images available online at www.liebertonline.com/tea
