a right ventricular endomyocardial biopsy study revealed histological features of a small number of mononuclear cell infiltrations , myocardial cell necrosis and early fibrosis associated with an increased number of fibroblasts and ultrastructural changes including myocytolysis , vacuolation in sarcoplasm and dissociation of some intercalated discs .
C0007634
cell
C0016030
fibroblasts