Figure 5From: Accurate normalization of real-time quantitative RT-PCR data by geometric averaging of multiple internal control genesLogarithmic histogram of the expression levels of 10 internal control genes determined in 13 different human tissues, normalized to the geometric mean of 6 control genes (GAPD, HPRT1, SDHA, TBP, UBC, YWHAZ). An approximately 400-fold expression difference is apparent between the most and least abundantly expressed gene, as well as tissue-specific differences in expression levels for particular genes (for example, B2M).Back to article page