Hi Claus-Dieter,



The BI_SNP cel files are for GenomeWideSNP_5. These are probably CEL files generated by one of our early access customers or development partners prior to the creation of the final scanning library files which use the official GenomeWideSNP_5 chip type name. So in short, use the GenomeWideSNP_5 library files with these CEL files.



You can use the tool apt-cel-extract (part of the Affymetrix Power Tools: http://www.affymetrix.com/partners_programs/programs/developer/tools/powertools.affx) to change the chip type in the CEL file to GenomeWideSNP_5.



Best,

Alan



Alan Williams | VP, Informatics | Affymetrix, Inc.
6550 Vallejo Street, Suite 100 | Emeryville, CA 94608
alan_williams@affymetrix.com<mailto:alan_williams@affymetrix.com>



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