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Figure 1 Evolution of PEM During the Entire Experimental Period

(A) Hematoxylin and eosin/safran histological investigation of (poly(allylamine hydrochloride)/poly(styrene sulfonate))₃-treated arteries and untreated arteries before implantation (magnification x25). Arrows show the presence of nuclei in arterial walls. Observation with confocal laser scanning microscopy of the transversal artery section treated with PEM^rho before implantation (B), at 1 week after (C), and at 12 weeks (D) after implantation (magnification x40, numerical aperture 0.8, scale bars = 75 µm). Blue asterisks indicate the lumen localization. PEM = polyelectrolyte multilayer film.