Fig 4. A positive correlation between LMP1 and p22^phox expression was detected in nasopharyngeal carcinoma.

A: The distributions of NPC tissue samples and non-NPC tissue samples with LMP1^high/ p22^{phox high}, LMP1^low/p22^{phox low}, LMP1^high/p22^{phox low} and LMP1^low/p22^{phox high} were determined with SPSS correlation analysis. B: In a tissue array, the p22^phox and LMP1 expression levels were detected in NPC cancer tissues using an IHC assay. P1 and P2 represents two NPC tissues from patients with distinctive p22^phox and LMP1 expression pattern. P1 tissue has low p22^phox and LMP1 expression level, and P2 has higher LMP1 and p22^phox expression level. NPC tissue sample with LMP1 negative and p22^phox were served as negative control (magnification × 400).