Fig. 1

Relative gene expression (based on expression of housekeeping gene GAPDH [ppm]) of target genes in untreated cells in two different platforms: a cDNA array, b Real-time PCR. Basal gene expression in PBMC (filled characters) was characterised by high individual variation, whereas HT29 cells (open characters) demonstrated low variability. Variation was detected more sensitive in real-time PCR experiments. GSTM2 was not detectable in HT29 cells using cDNA array