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Representative images of Masson's trichrome‐stained transverse sections of the LV chamber from male (A) and female (B) rats 8 weeks after MI. Since right ventricular free wall has been removed during heart processing, the red lines mark the borders between the interventricular septum and LV free wall. Note that in both male and female hearts a large area of LV free wall is occupied by the fibrous transmural scar (arrowheads). Scale bars are 1.2 mm.
