Histograms of the number of probes per probe in the SDEGs. Distribution of the number of probes per probe set in the sets of significantly differentially expressed genes for the set Alt1 (top) and the set Alt2 (bottom). The probe sets for which an identical probe set could be found in the Affy set are represented in red.
Gautier et al. BMC Bioinformatics 2004 5:111 doi:10.1186/1471-2105-5-111