Fig. 6. Expression of two fusion mRNAs: STAT3-Tat and 3′LTR-STAT3.

The diagram at the bottom shows the provirus whose structure is shown in Fig. 4 integrated into the STAT3 gene. The black and gray arrows in the middle show the transcription of the fusion RNA message for tat (black) and STAT3 (gray). The diagram at the top shows how the transcripts are spliced to produce the mature messages.