Ann Pediatr Card Close
 

Figure 2: (a and b) Matrix metalloproteinase-9 (MMP-9) immunohistochemistry. (a) Control; (b) bioresorbable reinforcement. Note MMP-9 overexpression in the PDS group indicating active matrix remodeling phenomena. (c and d) Mallory staining (c) control. Presence of collagen (blue); (d) bioresorbable reinforcement. Elastin deposition (pink). (e and f) PicroSirius red staining. (e) Control. Dispersed collagen fibers; (f) bioresorbable reinforcement compact collagen organization the "elastic zone" of the vessel and less pronounced cellular infiltrate

Figure 2: (a and b) Matrix metalloproteinase-9 (MMP-9) immunohistochemistry. (a) Control; (b) bioresorbable reinforcement. Note MMP-9 overexpression in the PDS group indicating active matrix remodeling phenomena. (c and d) Mallory staining (c) control. Presence of collagen (blue); (d) bioresorbable reinforcement. Elastin deposition (pink). (e and f) PicroSirius red staining. (e) Control. Dispersed collagen fibers; (f) bioresorbable reinforcement compact collagen organization the