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Figure 4 Histological Examinations of Explanted Grafts at 1 and 12 Weeks After Implantation

UnA (Carotid: A, HUA: B), with PEM-treated arteries after 1 week (Carotid: C, HUA: D) or 12 weeks (Carotid: E, HUA: F). Dotted arrows indicate inflammatory reactions at adventitia after 1 week. Black arrows indicate the absence of vascular cell, and blue arrows indicate red PEM after 1 week of implantation. The von Kossa reaction (G and H) at 12 weeks performed in the explanted arteries treated with PEM indicate the absence of wall calcification. Magnification x40. Abbreviations as in Figures 1 and 3.