Detection of KSHV gene expression by IFA. Uninduced (A, E, G, and H) and TPA-induced (B, C, D, and F) BAC36-infected 293 cells (A, B, E, and F), 293 cells (D and H), and BCBL-1 cells (C and G) were stained for LNA (E to H) or mCP (A to D) protein expression. Cells shown in panels A′, B′, E′, and F′, which were from the same fields as those shown in panels A, B, E, and F, respectively, expressed GFP, indicating the presence of BAC36.