Hello Everyone! I was trying to do some microarray data normalization and analysis for learning purpose using matlab[HG-U133Plus2] Affymetrix Human Genome U133 Plus 2.0 Array affymatrix chip. I got CEL file from NCBI GEO database. I need CDF file als but i couldn't find it. can anyone help me how to get the CDF file?

Thank you

If you analyze the data using oligo, or even affy, you will automatically get what you need. Please see the vignettes for those packages for more information.