Expression of CD80, CD86, HLA-DR, ICAM-1, and HLA-ABC in AML cell lines incubated in the presence or absence of SB.

The 9 AML cell lines indicated were incubated with or without SB for 48 hours. HL60 cells were treated with 0.7 mmol/L SB, and all other cells were treated with 0.5 mmol/L SB. The cells were then stained with FITC-conjugated antibodies and analyzed by flow cytometry. Histograms represent the log of fluorescence (horizontal axis) versus the relative cell number (vertical axis). Closed histograms (in black) represent medium-treated cells. Open histograms represent SB-treated cells.