Figure 4
From: Immune checkpoint molecule expression is altered in the skin and peripheral blood in vasculitis
Analysis of PD-L1 expression in the skin derived from patients with cutaneous vasculitis (a, b) Skin was collected from patients with cutaneous vasculitis or healthy donors and stained with anti-CD4 (green, a), anti-CD8 (green, b), and anti-PD-L1 (red). Insets indicate the magnified images of the vessel wall. Arrows show T-cells adjacent to the PD-L1 protein. Scale bars = 20 µm.
