Fig. 3From: Pericardial effusion under nivolumab: case-reports and review of the literaturePathology aspect of non-tumoural pericardial biopsies. Patient 1: Hematoxylin eosin saffron (HES) staining (a) (original magnifications × 200) showing reactive lymphocyte infiltrate with more CD4+ cells (b) than CD8+ cells (c). Few CD4+ cells are FOXP3+ (red nuclear staining) (b). Patient 2: HES staining (d) (original magnifications × 200) showing abundant lymphocyte infiltrate, mostly CD4+ (e) than CD8+ cells (f)Back to article page