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Figure 4 Histologic Analysis of Representative Myocardial Sections After Ischemia-Reperfusion Injury
Hematoxylin and eosin (H&E) staining (A to C) shows severe hemorrhage in the infarct zone of control pigs but not in IV-NTG and iNO-treated pigs. Myeloperoxidase (MPO) immunostaining in the border zone (D to F) indicates neutrophil infiltration in control pigs which was less in iNO pigs but not in IV-NTG pigs. Terminal dUTP nick-end labeling (TUNEL) staining for apoptosis (G to I) indicates less apoptosis in the border zone of the iNO pigs. Original magnifications: x200 (A to F) and x400 (G to I). Abbreviations as in Figure 1.
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