One (Figure 7D, bars 2 and 6) and in combination with HMBA (Figure 7D, bars 3 and 7) or Tat (Figure 7D, bars 4 and 8) to levels in untreated cells (Figure 7D, bars 1 and 5). Interestingly, *mRNA levels decreased concomitantly with the increased activation of transcription from the 5'LTR in both cell lines. Probably, the formation of the PIC at the 5'LTR prevents elongating complex from the upstrea