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The effect of SFI treatment on left ventricular myocardial fibrosis in rats with Masson trichrome staining after 4 weeks. Notes. (a) Sham group, (b) HF model group, (c) Valsartan + HF group, (d) SFI 1.5 mL/kg + HF group, and (e) SFI 0.75 mL/kg + HF group. Myocardium was stained red and collagens were stained blue. Bar, 100 μm. HF, heart failure; SFI, Shenfu injection.
