Inhibition of miR-23 promotes the transformation of bone marrow mesenchymal stem cells into cardiomyocytes. A. Western blot was applied to investigate the expression of cardiomyocyte markers after receiving of different treatment strategies. Post treatment of miR-23 inhibitor, the levels of GATA-4, Nkx2-5, MHC, and cTnI were markedly elevated when compared to the control. B. Semi-quantitative analysis of the expression of GATA-4, Nkx2-5, MHC, and cTnI for the western blot. ***P < 0.01 compared to the control group. ###P < 0.01 compared to the control cells.