Programmed death-ligand 1 (PD-L1) has been reported to be expressed in many types of tumor cells, and bind to PD-1 on T lymphocytes to inhibit immune response. Immunologic checkpoint blockade with antibodies that target the PD1/PD-L1 pathway has demonstrated to have impressive antitumor effects on many malignancies. However, the significance of PD1/PD-L1 pathway in cervical cancer remains unclear. Here we studied PD-L1, PD-1, CD8 and HPV expression in cervical cancer and normal cervix by immunohistochemical staining. Our results showed that there was more frequently positive for PD-L1, PD-1 and CD8 in cervical cancer tissues compared to normal tissues, especially those strongly stained HPV. Additionally, PD-L1, PD-1 and CD8 were more frequently stained in tissues from advanced tumor and tu...
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