Figure 1. Electrocardiography. In January 2010, premature ventricular contractions and left anterior hemiblock were seen (Left). On admission in March 2010, conduction disturbance was suggested from wide QRS and Q wave in multiple leads appeared (Right).
Figure 2. Hematoxylin- Eosin staining. Endomyocardial biopsy was performed from right ventricular septum on the 4th hospital day. The biopsied specimen was formalin fixed and paraffin embedded, (square: high power field).
Figure 4. Immunohistochemical staining. Immunohistochemical staining of 5-µm-thick thin sections was performed with primary antibodies for identifying each cell; T lymphocytes: anti-CD3 antibody (Dako, Glostrup, Denmark), B lymphocytes and Plasma cells: anti-CD20 and anti-CD79a antibodies (Dako), monocytes and macrophages: anti-CD68 (Dako). Incubation with an avidin-biotin-blocking system and secondary antibody and peroxidase-labeled avidin-biotin complex system (Dako) was performed then. Localization of the primary antibody was visualized with 3, 3’ diaminobenzidine (DAB), followed by counterstaining with hematoxylin. Upper left: CD68, lower left: CD20, lower right: CD79a, upper right: CD3
