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(A,B) Disease-free survival rate according to stromal (A) and intraepithelial (B) CD66b+ neutrophil density in central breast tumor samples analyzed with the Kaplan–Meier method and log-rank test. (C,D) Disease-free survival rate according to stromal (C) and intraepithelial (D) CD66b+ neutrophil density in invasive front samples.
