Overview of differential gene-expression patterns in CD34 and stromal cells following IFN-γ treatment. Genes selected for this analysis showed at least a 2.0-fold change. The right portion indicates upmodulation; the left portion indicates downmodulation. (A) CD34 cells. (B) Stromal cells. □ indicates change following 4 hours of culture; ▨, expression changes after 20 hours; ▪, concordant changes after 4 and 20 hours.