High-density oligonucleotide array properties
GeneChip® Rat Expression Set 230 (Affymetrix, Santa Clara, CA) is comprised of more than 31,000 probe sets and 681,012 distinct oligonucleotide features, analyzing the expression level of over 30,200 transcripts and variants from over 28,000 well-substantiated rat genes. GeneChip® Rat Expression Array 230A includes representation of the RefSeq data-base sequences the GeneChip® Rat Expression Array 230B contains probe sets from refined EST clusters.
GeneChip® Rat Genome 230 2.0 Array (Affymetrix, Santa Clara, CA) is comprised of more than 31,000 probe sets, analyzing over 30,000 transcripts and variants from over 28,000 well-substantiated rat genes. The only difference between GeneChip® Rat Expression Set 230 and GeneChip® Rat Genome 230 2.0 Array is the former provides complete coverage of the rat genome on two arrays, and the later is on single array.