PECAM1 and myocardial infarction: Immunofluorescence co-localization for CTHRC1 with vimentin, cTnI, and CD31 in infarcted heart tissue from WT mice collected at day 7 post-MI revealed the enrichment of CTHRC1 in cardiac fibroblasts (Figure 1J), the low expression in endothelial cells (Figure S3C) but not in cardiomyocytes (Figure S3D).