Figure 4

Illustration of the results on the spiked Gene ST arrays. Both shape of the artefact and intensities of the spiked probes were transfered from exon arrays containing artefacts. a) shows the spiked probes in red and b) and c) the probe scores based on fold changes between replicates using only the probe information itself (b) or also its neighborhood (c). For both b and c the overall shape of the spiked stain can easily be identified, but only when using the window-criterion (c) all probes within this area are identified. Furthermore, in B there are more probes with high noise scores that were not spiked (false positives).