Figure 5From: N-acetylcysteine for the prevention of stricture after circumferential endoscopic submucosal dissection of the esophagus: a randomized trial in a porcine modelImmunohistochemical staining with 8-hydroxy-2’ deoxyguanosine antibody. Strong signal predominant in perivascular region in control (A) and almost absent signal in treated swine (B.)Back to article page