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Table 1 SplicerAV related probeset features of commonly used Affymetrix microarrays

From: SplicerAV: a tool for mining microarray expression data for changes in RNA processing

Platform Unique Annotated Genes Genes w/Mult Probesets Fraction of genes w/mult probesets Avg. Probesets per gene Unannotated Probesets Total Probesets
U133 Plus 2.0 19,761 11,193 57% 3.2 9818 54,675
U133 A 12,737 4,609 36% 2.7 1917 22,283
U95 A 8,690 1,946 22% 2.4 1253 12,651
Mouse 430A 2 12,755 4,934 39% 2.6 2118 22,690