Figure 1. Role of CCR1 in the invasion and metastasis of breast cancer cells.
(A) Representative immunohistochemical staining of CCR1 in breast invasive ductal carcinoma (IDC) and adjacent normal tissue samples. Square N indicates total tissue number. (B) Relative staining scores of CCR1 immunoreactivity in IDC and adjacent normal tissues. Data are mean ± SD. Spot, individual sample; blue horizontal line, mean; red vertical line, error bar. ****, P < 0.0001 (n = 178, paired two-tailed t-test). (C) Relative immunohistochemical staining intensity of CCR1 in ER, PR, HER2, or TN negative (-) or positive (+) samples. Square number indicates total sample number. ER, estrogen receptor; PR, progesterone receptor; HER2, human epidermal growth factor receptor 2; TN, triple negative (ER-/PR-/HER2-). Values are expressed as mean ± SD. NS, not significant; ****, P < 0.0001; **, P < 0.0220 by one-way ANOVA followed by Sidak’s multiple comparisons test (comparison between normal and cancer groups).