Fig. 5From: Molecular classification of high-grade, muscle-invasive urothelial carcinomas and the relationship with CTLA-4 and PD-L1 expressionCTLA-4 expression in neoplastic cells, showing no positive immune cells from the tumor’s microenvironment. Technique: immunohistochemistry. Magnification: 200x (A), 400x (B)Back to article page