Fig. 4. Histology images of myocardial tissue. Seven days after CVB3 challenges, paraffin sections of heart tissues were stained with hematoxylin-eosin and viewed by light microscopy (original magnification×200). The representative photographs of heart tissue from normal, CVB3 control, vehicle control, cinnamaldehyde (40 mg/kg), interferon (10 mg/kg) and compound 2, 4, 5 (20, 40 and 60 mg/kg) groups. Mononuclear cell inflammation and necrotic cardiomyocyte site were indicated by a small black arrow.
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