Figure 2From: Identification of valid reference genes for gene expression studies of human stomach cancer by reverse transcription-qPCR Average expression stability (M) of six candidate reference genes by geNorm analyses. Expression stability were plotted in 'non-stomach cancer cell lines' (A), 'stomach cancer cell lines' (B), 'normal stomach tissues' (C), 'tumor stomach tissues' (D), 'all stomach tissues' (E) and 'all stomach cancer cell line and tissues' (F). The least stable reference gene (higher M value) is on the left and the most stable combination (lower M value) is on the right of the plot. Most stable reference genes were deduced by stepwise exclusion of the least stable genes.Back to article page