PDLIM7 and Epstein-Barr virus infection: Principal components analysis results showed that cells with EBV infection or LMP1 expression could be distinguished from controls (NP69, CNE1 and HNE2 cells) by their principal component 1 value (27.81% of variance), and the presence of both EBV infection and LMP1 expression resulted in an obvious different biochemical profile (Figure 1c).