Fig. 6

Photomicrograph of hematoxylin and eosin stained longitudinal cardiac tissue section from a control group showing normal architecture of myocardial fibers (Mf) and normal striations with centrally located oval nuclei (N), acidophilic cytoplasm and connective tissue Scale bar = 50 µm. b DMBA treated-group showing cardiac muscle fibers (Mf) with nucleus (N), injury characterized by vacuolation (V), necrotic cardiac myocytes (star) and destroyed striations of muscle fibers with irregular distribution of connective tissue (CT), Scale bar = 20 µm. c DMBA + Art treated-group showing longitudinal cardiac tissue displaying poor improvement of cardiac muscle fibers few vacuolation (V), degenerated cardiac myocytes (star) and desorganized striations of muscle fibers (Mf) with connective tissue (CT) Scale bar = 20 µm. d DMBA + Ech treated-group showing cardiac muscle fibers (Mf) characterized by little improvement in organization and striations of muscle fibers and congested blood vessels, Scale bar = 20 µm. e Art + DMBA treated-group revealing some improvements in organization and striations of cardiac muscle fibers (Mf) with good distribution of connective tissue (CT), Scale bar = 20 µm. f Ech + DMBA treated-group demonstrating marked amelioration of organization and striations of cardiac muscle fibers (Mf) with good distribution of connective tissue (CT). Scale bar = 20 µm