(A) Representative HE staining images of heart sections from minipigs with MI or sham operation at 1 month after myoblast transplantation, control treatment or left untreated. (B) Representative TTC staining images of heart left ventricular sections from minipigs treated as in (A), and infarct size was measured and showed as a percentage of total area of left ventricular myocardium. (C) Q-PCR analysis of the expression of Acta2, Col1a1 and Col3a1 in heart tissues from minipigs treated as in (A). (D) The measurement of longitudinal (left and middle panels) and radial (right panel) strain by 2D-STE of cardiac function of minipigs treated as in (A). n=6. Data are representative (A, B left, D), or mean ± SEM (B right, C) of 3 individual experiments. *P < 0.05, **P < 0.01.