A) Confocal images of immunofluorescence stained markers of cardiac fibrosis and MyoF differentiation; α-SMA, collagen-I (Col I), fibronectin (Fn), and MMP-2 after 14 days of culture. B) Data representing RT-PCR of mRNA expression of α-SMA, collagen-I, fibronectin, and MMP-2 in normal culture medium (NM) compared to NM + TGF-β1 after 14 days of culture. Data depict fold-change ± standard deviation. *p<0.05.