Fig. 4

Association between progesterone receptor (PgR) status and subsets of tumor-infiltrating immune cells. a Total leukocyte density (count/g) in breast cancer tissue according to PgR status. b–m Count of each immune cell fraction per unit weight of the tissue (count/g) according to PgR status. A tabulated summary of the statistics values and recalculated statistics values excluding outliers is shown on the upper and lower left sides of the figure, respectively. ns p > 0.05 (not significant); *p < 0.05; **p < 0.01; ***p < 0.001