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Programmed Cell Death Ligand 1 (PD-L1) and major Histocompatibility Complex Class I (MHC Class I) Expression Patterns ...
Introduction Triple-negative breast cancer (TNBC) comprises 10–20% of invasive breast cancers.1 It lacks estrogen receptor (ER), progesterone receptor (PR), and human epidermal growth factor receptor 2 (HER2) expression, presenting challenges in prognosis …