Figure 1
From: Minimally invasive system to reliably characterize ventricular electrophysiology from living donors

Scheme of tissue collection and preparation. Transmural tissue blocks and transmural core biopsies from a neighboring left ventricular region obtained from pig hearts by using a razor blade and a transmural core biopsy needle, respectively. Slice sectioning in planes parallel to the epicardium is essential to maximize the amount of longitudinal myocardial fibers.