Fig. 3

Endomyocardial biopsy of the left ventricle. Photomicrograph showing moderate to severe endocardial thickening, interstitial and perivascular fibrosis, and focal interstitial edema (scale bar: 100 µm) (a). High-power view with hematoxylin–eosin stain showing moderate hypertrophy of myocytes with no remarkable myocyte loss (scale bar: 50 µm) (b). Some CD3 + T-lymphocytes can be observed (scale bar: 100 µm) (c). CD68 + macrophages can be observed sporadically in the interstitial fibrosis area (scale bar: 100 µm) (d)