Fig. 5
Distribution of signal intensities before and after normalization and scaling. Boxplot of (a) background-corrected raw hybridization signal intensities, (b) normalized signal intensities after VSN normalization of the replicate arrays of each species, respectively, and (c) signal intensities after the application of species-specific global scaling factors to the normalized data. Boxes show median, and upper and lower quartiles, of L o g 2 probe signal intensities for each gDNA hybridization. Upper and lower horizontal bars mark all values lying within 1.5 times the inter-quartile range. Replicate hybridizations are denoted 1 and 2 and grouped by species