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Porcine collagen (Control) implanted in the Wistar rat subdermal area for 30 and 90 days. (A,B) correspond to implantation at 30 days, (C,D) to implantation at 90 days. (A,C) at 10×. (B,D) at 40×. IZ. Implantation area. II: Inflammatory infiltrate. M: Muscle. At: adipose tissue. Hematoxylin Eosin Technique (H&E).
