Alternative forms of EBV latency. Transcripts expressed in lymphoblastoid cell lines (LCLs) and in three alternative forms of latency seen in early passage BL cell lines are illustrated relative to the EBV linear genome, with promoters (arrowheads) and splicing patterns as shown; coding exons (EBNA and LMP mRNAs) are shaded solid, while non-coding exons (EBER RNAs, BamHI A RNAs, and BART miRNAs) are unfilled.