GAPDH and myocarditis: The gray value ratio of TGF-β1 protein band and GAPDH band was significantly lower in both the normal control group and the BMSCs treatment group than in the myocarditis group (F = 4.317; P < 0.05), especially in the VMC1w + BMSCs subgroup (q = 6.085; P < 0.01), and there was no significant difference between the normal control group and the BMSCs treatment group (Figure 5(d)).