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Immunoexpression of CTLA-4 and PD-L1 in tumor cells of metastatic testicular germ cell tumor samples. Distribution of CTLA-4 positivity (A) and PD-L1 positivity (B) in tumor cells among residual mature teratoma and non-teratoma viable disease. Abbreviations: TC—tumor cells; TE—teratoma. * refers to p < 0.05; *** refers to p < 0.001.
