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CCND1 and PD-L1 exhibit high expression in breast cancer. (A) Expression of PD-L1 and CCND1 in BRCA (magnification was 200 µm and 400 µm) and DAB staining; (B) CCND1 was highly expressed in BRCA tissues compared to noncancerous breast tissues; (C) PD-L1 was highly expressed in BRCA tissues compared to noncancerous breast tissues. **P<0.01, ***P<0.001. PD-L1, programmed cell death-ligand 1; BRCA, breast cancer.
