KIT and myocardial infarction: At day 5 after MI induction and CS transplantation, we found an increased number of c-kit positive cells (Figure 5a–d) in ischemic myocardium from SCF-MSC CS group (101 ± 27 cells per field of view) which was almost 3 times higher than in control (33 ± 11 cell per field of view).