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Representative microphotographs of heart lesions. Upper left: intramyocardial artery (A) of a control non-treated rat (no morphological alterations, PAS, 10×); (B) hyaline arteriopathy (HA) in a coronary artery of L-NAME-treated rat (PAS, 10×); (C) intense vascular damage with inflammatory infiltrate (II) and myocardiocytes lesions in a L-NAME-treated rat heart (PAS, 10×); (D) fibrinoid necrosis (FN) in a coronary artery of L-NAME-treated rat (PAS, 10×).
