Figure 1.

Immunohistochemical staining of NPC tissue microarray and their correlation with survival of NPC patients. (a). High expression of MIF shown under lower power field in the microarry section. (b). Cytoplasmic weak staining of MIF in lining epithelium of nasopharynx. (c). High expression of DJ-1 showed positive immunostaining signal was localized in the cytoplasm of tumor cells. (d). The DJ-1 staining in normal epithelia of nasopharynx was weaker and local. (e). By Kaplan-Meier survival analysis, patients with lymph node metastasis had a lower overall survival rate than those without lymph node metastasis. (f). There was a significant difference in overall survival rate between the patients with MIF high-expression and low-expression. (a: Immunohistochemical staining with original magnification, 100×; b-d: Immunohistochemical staining with original magnification, 400×)