Interestingly TGFβ3 was detected increasing gradually with the infarction time and reached the peak about one month after MI, which was different from TGFβ1 and TGFβ2, revealing a distinct effect of TGFβ3 in the development of fibrosis post‐MI (Figure 1B‐D). This evidence concerns the gene TGFB1 and infarction.