TGFB1 and myocardial infarction: ELISA showed extremely low yield in both active (sham 0.00540 ± 0.00672 ng/mg; MI 0.0498 ± 0.0302 ng/mg) and total TGF-β levels (sham 0.312 ± 0.096 ng/mg; MI 0.510 ± 0.066 ng/mg) and failed to demonstrate any significant increase of either active or total TGF-β levels in the post-MI myocardium compared with the sham myocardium.