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Masson’s trichrome staining of heart tissue and CVF. (A) Representative figure of myocardial fibrosis (Masson staining, 200×); (B) Statistic results of myocardial fibrosis (n = 8); 1: Control group; 2: Water extraction group; 3: Ethanol extraction group; data are expressed as mean ± SD. ** p <0.01 vs. control group; ## p < 0.01 vs. water extraction group.
