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Immunoexpression of CTLA-4 and PD-L1 in immune cells of testicular germ cell tumors. CTLA-4 positivity (A) and expression above the 50% cutoff (C) in immune cells among seminomas and non-seminomas. PD-L1 positivity (B) and expression above the 50% cutoff (D) in immune cells among seminomas and non-seminomas. Abbreviations: IC—immune cells; NS—non-seminoma; SE—seminoma.
