Figure 2
Patterns of probe signal intensities from five independent microarray experiments. Comparison of signal intensities of all 1629 microarray probes, obtained from five independent, separately normalized microarray experiments. Probes are ordered according to the genome coordinates of their target regions, on the plus strand (upper diagram) and minus strand (lower diagram). Probes covering IR regions have targets on both strands and are displayed twice; on the minus strand, they are masked by semitransparent blocks. Normalized probe intensity from each of five independent microarray experiments (A-E) is presented (Anorm). For each probe in each experiment, Anorm value was obtained by dividing probe intensity (average from two duplicates) by the corresponding Amean (defined in Table 2). This enabled signal intensity comparison across all five experiments. All microarrays were analyzed with no background correction, apart from experiment D, for which local background subtraction was applied, due to high background intensity on most microarrays in this set.