Endoscopic resection of the pancreatic tail and subsequent wound healing mechanisms in a porcine model

Figure 9 Immunohistochemical staining. A: Immunohistochemical staining for transforming growth factor (TGF)-β1 at baseline (400×); B: Expression of TGF-β1 on the 3^rd day postoperatively (400×), C: Expression of TGF-β1 on the 7^th day postoperatively (400×). D: Expression of TGF-β1 at 14 d after surgery (400×). E: Immunohistochemical staining for Smad3 at baseline (400×), F: Expression of Smad3 at 3 d postoperatively (400×). G: Expression of Smad3 at 7 d postoperatively (400×). H: Expression of Smad3 at 14 d postoperatively (400×). I: Immunohistochemical staining for Smad7 at baseline (400×). J: Expression of Smad7 at 3 d postoperatively (400×). K: Expression of Smad7 at 7 d postoperatively (400×). L: Expression of Smad7 at 14 d postoperatively (400×).