Furthermore, PHD2 shRNA-modified BMSC transplantation by UTMD promoted VEGF and bFGF expression in ischemic myocardium at the 4th week after AMI, which was significantly higher in MI-LV-shPHD2-GFP-BMSC group than in other groups (Figure 8I-K). This evidence concerns the gene EGLN1 and myocardial infarction.