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Positive expression of protein S100-A8 in NMBT, primary breast tumor, PMLN and BBD control tissues. The results revealed significant differences between NMBT and PMLN and between PBT and PMLN, which were statistically evaluated by the χ2 test. NMBT, non-metastatic breast tumor; PBT, primary breast tumor; PMLN, paired metastatic lymph node; BBD, benign breast disease.
