Comparison of differential gene expression measured by cDNA array technology and either quantitative real-time RT or flow cytometry.

Upward-pointing bars indicate a higher expression in BM-CD34⁺ than in PB-CD34⁺ cells. Downward-pointing bars indicate a higher expression in PB-CD34⁺ than in BM-CD34⁺ cells. Mean values of 2 (real-time RT-PCR) and 3 (flow cytometry) independent experiments in duplicate are indicated.