Abstract: To investigate the tissue repair of acute viral myocarditis,and to explore the diagnostic method of slight viral myocarditis in forensic pathology. Slight viral myocarditis model was induced in Balb/c murine by CVB3. Collagen proliferation in myocardium of mice with myocarditis was observed by special staining.The hearts of mice and human(9 cases) with myocarditis were studied LSAB－ immunohistochemically with anti－ TGF－β 1 antibody.In the study, the proliferation of collagen was seen in myocardium in acute viral myocarditis. Generous expression of TGF－β 1 was found in the myocardium of mice and human with myocarditis. The quantity of collagen proliferation and expression of TGF－β 1 was positive correlation. It is concluded that the tissue repair exists in acute viral myocarditis and that positive staining of myocardium for TGF－β 1 is a sensitive index of myocardial damage and tissue repair.

Key words: viral myocarditis, TGF－β_1, pathology, immunohistochemistry, collagen