Hi, I have some CEL files that I would like to analyse with R. I managed to import them and to add the experiment description adding a covdesc file to my directory (I have two groups that I want to compare). Unfortunately I cannot continue to work with Affy because my Clariom S Mouse Background is not supported by Affy. How do I manage to add my experimental description using oligo? Is there any way to make it work using Affy? Thanks a lot!