TNNT2 and myocardial infarction: cTnT staining revealed that the myocardial tissue in the MI region remained more intact 1 week after MI in the VCM transplantation group compared with the sham group, and the percentage of the area of preserved cardiomyocytes out of MI area was numerically greater in the VCM group than in the sham group (31 ± 13% vs 10 ± 9%, P = .2), suggesting that this contributed to the reduction of conduction disturbances (Figure 4, B, and C).