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Table 2 Differences of biomarkers between primary tumor and lymph node metastasis tumor

From: Correlation effect of EGFR and CXCR4 and CCR7 chemokine receptors in predicting breast cancer metastasis and prognosis

  cytoplasmic CXCR4 CCR7 CXCL12 CCL21 EGFR
  Low High P Low High P Low High P Low High P Low High P
  (n) (n)   (n) (n)   (n) (n)   (n) (n)   (n) (n)  
PT 31 69 .372 30 70 .336 62 38 .016* 52 48 .004** 49 51 .572
MT 38 62   23 77   45 55   32 68   53 47  
  1. PT means primary tumor, MT means lymph node metastasis tumor. The differences of the biomarker between primary tumors and metastasis tumors were tested by pearson χ2 analysis. *P < 0.05, **P < 0.01