Figure 7. HRY levels correlated positively with Bmi-1 levels in NPC tissues. (A) HRY and Bmi-1 mRNA levels correlated significantly and positively with one another in NPC samples (Spearman’s correlation analysis, r = 0.8273, P = 0.0005). (B) Relationship between HRY and Bmi-1 levels in immunohistochemical analysis of NPC tissues. (C) HRY levels correlated positively with Bmi-1 levels in NPC tissues (χ2 test).