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H&E and PD-L1 staining in penile SCC tissues. (A-D) H&E staining and positive PD-L1 expression in same area of tissue. (E-H) H&E staining and negative PD-L1 expression in the same area of tissue. Scale bar, 100 µm (magnification, x40). H&E, hematoxylin and eosin; PD-L1, programmed cell death ligand-1; SCC, squamous cell carcinoma.
