Fig. 1

Pathological findings of myocardial biopsy; a Lymphocytic and macrophages infiltration. b Shedding of cardiomyocytes (30–40%) or severe degeneration is observed. c, d CD3-dominant T cells were observed than CD20. e, f CD8-dominant T cells were higher in number than CD4 cells. a, b: H & E, × 150; c: CD3, × 150; d: CD20, × 150; e CD4, × 150; f CD8, × 150