Figure 2.

Histological and immunohistochemical staining of the endomyocardial biopsy prior to treatment revealed atypical, intermediate to large-sized lymphoid cell infiltration in myocardium; E: Hematoxylin and eosin staining (magnification at 400×). F: anti-CD19 staining (magnification at 400×). G: anti-CD20 staining (magnification at 400×). H: anti-CD79 staining (magnification at 400×).