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Associations between tumor cell PD-L1 expression and TIL cell densities within Non-TNBC (A), TNBC (B), TNNB (C) and Basal-like subtypes (D). Bars represent means +/- standard error. Black and grey bars represent intra-epithelial and intra-stromal densities of CD8, CD4, and CD68 positive TIL respectively. Non-TNBC = Luminal A + Luminal B + Her2; TNBC cases = TNNB (Triple Negative Non Basal) + Basal-like subtypes; NS = no significance, *p ≤ 0.05, ** p ≤ 0.01, ***p ≤ 0.001.
