TNNI3 and myocardial infarction: However, ab12 partially decreased the IL-34-mediated increase in myocardial infarction size (0.53 ± 0.022, p<0.05), serum cTnI (60.96 ± 2.92 ng/ml, p<0.05) and serum CK-Mb (2215.60 ± 60.75 ng/mL, p<0.05) levels (Fig 2).