Fig. 6From: Study of the tumor microenvironment during breast cancer progressionThe expression of inflammatory cytokines. To survey the amount of inflammation in microenvironment of breast cancer and normal tissues, two principal inflammatory cytokines, TNF-α and IL-6 were analyzed. From different stages of breast cancer and control group, RNA was extracted, then the level of gene expression was measured by qPCR. a In the tumor and normal breast tissues b in the different stages of breast cancer and normal group. *Pv < 0.05, **Pv < 0.01Back to article page