Fig. 1From: DBNorm: normalizing high-density oligonucleotide microarray data based on distributionsAn example application of DBNorm. Probesets from data source 1 (top left) and probesets from data source 2 (bottom left) are visualised with PCA and show platform specific variation. DBNorm takes histograms of probe sets from each data source (second column) and fits a curve to the shape (column 3). The formula (middle column 3) normalises data source 1 to take the shape of data source 2. PCA visualisation of the combined dataset (bottom right) shows reduction in platform specific variationBack to article page