PSMB9 and systemic lupus erythematosus: And four EBV viral mRNAs [BamHI Z leftward open reading frame (BZLF)-1, latent membrane protein (LMP)-1, LMP-2, and nuclear antigen of EBV (EBNA)-1] are illuminated to be abnormally expressed in PBMCs from SLE patients than controls (14).