A: hPL ability to up-regulate cardiomyogenic specific genes expression. Each graph displays the expression levels of GATA4, cTnT, Cx43 and Nkx2.5, which were normalized to GAPDH and were relative to the control group. Data are presented as mean ± S.E. values. ∗ statistically significant versus control. # statistically significant between group. B: hPL combined with 5-aza ability to up-regulate cardiomyogenic specific genes expression. Each graph displays the expression levels of GATA4, cTnT, Cx43 and Nkx2.5, which were normalized to GAPDH and were relative to the control group. Data are presented as mean ± S.E. values. ∗ statistically significant versus control. # statistically significant between group.