Fig. 8

Representative image of IHC staining of DNMT1 in nasopharyngeal carcinoma tissue. a Negative (−) (a–c), weak (+) (d–f), positive (++) (g–i) staining of DNMT1 in NPC tissue. b The correlation of DNMT1 staining with 5-year survival (a) and total survival time (b). * p < 0.05 is considered to be significant statistically