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Figure 5 Masson trichrome staining (x100) showing (A) hypocellular transmyocardial implant channel remnant filled with blue-staining connective tissue. Large region devoid of connective tissue within channel remnant is prior location of coil of implant device, which has been removed post mortem. Similar-appearing region six months post-transmyocardial laser revascularization is shown in (B).