How much over-lap is there between ArrayExpress and the Gene Expression Omnibus (GEO)?
We import data on a weekly basis from GEO (NCBI). As a priority all GEO experiments which are in GEO datasets on catalogue Affymetrix and Agilent platforms are imported and we re-curate these before loading into ArrayExpress. We also import all GSE on these platforms and these are loaded uncurated if they pass our quality checks (e.g. no corrupt data files). All experiments imported from GEO have accession numbers in the format of E-GEOD-n, where n is a number. For more information see the GEO data import page.
