The E2A and UXP family of mRNAs. (A) Previously characterized E2A and UXP mRNAs. (B) Novel E2A and UXP mRNAs grouped into mRNAs with the same transcriptional start site. The numbers of reads identified at 12, 24, and 36 hpi are shown in boxes on the right. Thick lines denote exons, thin lines introns. Gray boxes indicate the proposed proteins expressed from respective mRNA. The asterisk and the boxed areas in panel B indicate a microheterogeneity in 5′ splice site usage at novel exon 2, which is shown expanded in panel C. TSS, transcriptional start site. For a complete summary of the triple-verified E2 and UXP mRNAs, see Table S1.