Tarvinder S. Dhanjal et al. JACEP 2017;3:

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Tarvinder S. Dhanjal et al. JACEP 2017;3:703-714 Histological Assessments of Zones 1 to 4 in Post–Myocardial Infarction Ventricles Ventricular sections were stained for cardiomyocytes (CM) (cardiac troponin T–positive) (brown; left panels), myofibroblasts (MFB) (α-smooth muscle actin–positive/von Willebrand factor–negative [α-SMA+/vWF−) (red), and endothelium and/or blood vessels (α-SMA+/vWF+) (co-incident red and black; middle panels), and fibroblasts (FB) (α-SMA−/vimentin-positive) (black; right panels). Light green and picromethylblue were used to visualize cellularity and connective tissue and/or the extracellular matrix, respectively (Online Appendix). Boxes outlined in white (0.15 mm2) are magnified in the middle and right panels. iVT = inducible ventricular tachycardia; VT = ventricular tachycardia. Tarvinder S. Dhanjal et al. JACEP 2017;3:703-714 2017 The Authors