Technical Note, GeneChip® Expression Platform: Comparison, Evolution, and performance

Advances in scanner technology, array manufacturing, analysis algorithms, sequence selection, probe design, and assay conditions have all contributed to improving the amount and quality of data obtained from a single GeneChip brand array. Additionally, a reduction in feature size has increased the data density on GeneChip arrays. As a result, Affymetrix was the first company to enable researchers to conduct expression analysis of the known (human, mouse, rat) genomes on single arrays.