Figure 3From: A universal reference sample derived from clone vector for improved detection of differential gene expressionHistograms of background corrected spot intensities of reference samples. (a) Stratagene Universal Reference RNA™ from dataset GSE1706 (b) vRNA. Note that the range of background corrected spot intensities in a biologically derived reference (Stratagene Universal Reference RNA™) cover 11 orders of magnitude and the middle 50% of the spot intensities cover 5 orders of magnitude whereas background corrected spot intensities using vRNA covers 7 orders of magnitude and middle 50% of the spot intensities cover 2 orders of magnitude.Back to article page