Fig. 1From: Prognostic significance of PD-L1-positive cancer-associated fibroblasts in patients with triple-negative breast cancerImmunohistochemical staining for programmed death-ligand 1 (PD-L1) (73–10) expression on cancer-associated fibroblasts (CAFs) in triple-negative breast cancer. a PD-L1-positive CAFs (arrows). No PD-L1 expression is noted in the carcinoma cells (× 400). b PD-L1-negative CAFs (×400)Back to article page