VEGFA and myocardial infarction: Furthermore, blood vessels were observed in the group treated with HIF1A in vivo study and expression levels of VEGF and Cd31 were remarkably higher than the control group.76 Multicistronic lentivectors expressing SERCA2a (contractile function), apelin (cardioprotection), and FGF 2 (angiogenesis) designed and injected into the myocardial tissue of the mouse model of MI.