( A ) Immunohistochemical staining showed that eNOS expression in the MI group was lower than the sham, and eNOS expression in the MI + simvastatin group was higher than the MI group (endothelial line, red arrows); and ( B ) iNOS expression in the MI group was higher than the sham, and iNOS expression in the MI + simvastatin group was lower than the MI group (cytoplasmic brown area, black arrows).
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