What files do I need to submit for an Affymetrix experiment?
For a MIAME compliant submission we need Affy .CEL files as raw data and some form of processed, probe set level data. The processed data could be the Affymetrix .CHP files or data from some other software such as as RMA or dChip. For more information on how to format your processed data files see our data file help page. You do not need to provide CHP files if you did not use them. Affymetrix .EXP files can be provided but they are not mandatory as the Affy software no longer creates them.