Cardiac fibrosis induced by myocardial infarction (MI)42 exhibited significant upregulation of classical stromal markers such as Pdgfrβ, Vim and αSma, which reached prominence at Day 3 and 7 post-MI (Fig. 7, A–C, Supplemental Fig. 11, A-E). This evidence concerns the gene PDGFRB and myocardial infarction.