Inhibition of allogeneic T-cell response by Kupffer cells expressing indoleamine 2,3-dioxygenase

Figure 1 Reverse transcription polymerase chain reaction (RT-PCR) shows indoleamine 2,3-dioxygenase (IDO) and FasL expression in Kupffer cells (KC) before and after activation with recombinant interferon-γ (IFN-γ). RT-PCR showing FasL expression in KC before (lanes 1 and 2) and after activation for 6 h (lanes 3 and 4) or 24 h (lane 5) with IFN-γ. RT-PCR showing IDO expression in KC before (lanes 6-8) and after activation for 6 h (lane 9) or 24 h (lane 10) with IFN-γ.