FIG. 4.

Detection of latent protein expression in latently EBV-infected cell lines. Equal numbers of viable cells from each clonal cell line was harvested and subjected to sodium dodecyl sulfate-polyacrylamide gel electrophoresis. (A) Western blot analysis using human antiserum that recognizes EBNA1, EBNA2, and the EBNA3s. LCL#1 cells express all three EBNAs, whereas the murine cells express EBNA1 alone. (B) Western blot analysis using polyclonal rabbit sera to detect LMP1. Molecular weights (in thousands) are on the right.