It is now known that EBV transformed LCLs express at least 6 nuclear antigens (EBNA1, EBNA2, EBNA3A, EBNA3B, EBNA3C and EBNA-LP) and three membrane proteins (LMP1, LMP2A and LMP2B); in contrast, the majority of BL tumours express only one virally encoded protein, EBNA1. This evidence concerns the gene PDLIM7 and neoplasm.