Compared to the sham‐operated hearts, TLR3 mRNA levels were increased by 3.4‐ and 2.7‐folds (Fig. 3A), and TLR3 protein levels were increased by 5.9‐ and 4.4‐folds (Fig. 3B), respectively, in the infarct and remote zones of MI hearts. This evidence concerns the gene TLR3 and myocardial infarction.