Main logo
tutorial arrow
Create your own tool library
Bookmark tools and put favorites into folders to find them easily.

Chip Definition Files CDF


Encodes the physical design of the microarray and contain the sequence details to link the oligonucleotide probes of the chip to the interrogated transcripts. CDFs is a set of custom for Affymetrix human GeneChips, based on the information contained in the GeneAnnot database. This method solves the problem of a reliable reconstruction of expression levels and eliminate the existence of more than one probeset per gene, which often leads to discordant expression signals for the same transcript when gene differential expression is the focus of the analysis.

User report

tutorial arrow
Vote up tools and offer feedback
Give value to tools and make your expertise visible
Give your feedback on this tool
Sign up for free to join and share with the community

0 user reviews

0 user reviews

No review has been posted.

CDF forum

tutorial arrow
Communicate with other users
Participate in the forum to get support for using tools. Ask questions about technical specifications.
Take part in the discussion
Sign up for free to ask question and share your advices

No open topic.

CDF classification

CDF specifications

Software type:
Restrictions to use:
Programming languages:
Computer skills:
Command line interface
Operating system:
Unix/Linux, Windows
GNU General Public License version 3.0
Source code URL:

CDF distribution


tutorial arrow
Upload and version your source code
Get a DOI for each update to improve tool traceability. Archive your releases so the community can easily visualize progress on your work.
Facilitate your tool traceability
Sign up for free to upload your code and get a DOI

No versioning.

CDF support


  • Silvio Bicciato <>


tutorial arrow
Promote your skills
Define all the tasks you managed and assign your profile the appropriate badges. Become an active member.
Promote your work
Sign up for free to badge your contributorship



Department of Biomedical Sciences, University of Modena and Reggio Emilia, Modena, Italy; Department of Biology, University of Padova, Padova, Italy; Department of Molecular Genetics, The Weizmann Institute of Science, Israel; Department of Biological Services, The Weizmann Institute of Science, Israel; Bioinformatics Knowledge Unit, The Lorry I. Lokey Interdisciplinary Center for Life Sciences and Engineering Technion, Israel Institute of Technology, Haifa, Israel; Department of Chemical Engineering Processes, University of Padova, Padova, Italy

Funding source(s)

This work was supported by grants from the Italian Ministry of University and Research (PRIN2005050779 and PRIN2005069853), OncoSuisse Collaborative Cancer Research (OCS-1939-8-2006), the University of Padova (CPDA065788/06, CPDR064110 and CPDR074285), Fondazione Cassa di Risparmio di Padova e Rovigo (Progetti di Eccellenza 2006), the Weizmann Institute of Science Crown Human Genome Center and the Abraham and Judith Goldwasser Fund.

Link to literature

By using OMICtools you acknowledge that you have read and accepted the terms of the end user license agreement.